Uranian Encyclopaedia




Actinium Era, the: see The Actinium Fulfilment

Age of Spies, the

Age of the Wise, the a term sometimes applied to the Hafnium Era, when most big decisions were left to Simulators.

Ahim Trarv 77062

airved: see currency


Aluminium Era

Antimony Era


Ao: see under Cities, The Great Triangle and The Last Great Hive

Arclour: the fabled Starward Polar region of Ooranye, antipodeal to the Sunward City, Skyyon.  It was the ultimate intended destination of Sunnoad Fiarr Fosn 723 and the First Great Fleet.  He never got near it, of course; and the legendary disaster which overwhelmed him and his fifteen hundred airships seemed to confirm that mankind was not destined to reach Arclour.  Recently, however, with the success of the Second Great Fleet, Uranians - like Earthmen after the first moon landings - have had to get used to thinking of what used to be unattainable, as having now been reached.  As for what was found there - it is only possible to hint at it, in any human language.  At the moment of the arrival of the Second Great Fleet, Arclour became the site of the hinge event in Uranian history, the "write-over" or "Fostering", whereby Ooranye's past was grafted on to the formerly lifeless gas-giant planet Uranus, so that Uranus became its full, destined self - as Ooranye - and moreover, has now always been so.   See The Assault on Arclour.

arelk: the political "hardening of the arteries" whereby the freedom and renl of a noadex is converted into a rigid, authoritarian structure.

Argon Era, the:


Arsenic Era

Astatine Era


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Bank of Light, the: nickname for an institution arising in the Phosphorus Era as a reaction against the hubristic power-hunger of that era.  Citizens could deposit units of a different kind of power into this Bank: units of mind-power arising from contemplation.  The Bank, by releasing this hoarded awareness  at a crucial moment in history, saved Syoom from possible annihilation after the destruction of the Great Fleet.

Barium Era 

Beryllium Era

Bismuth Era

bneen, the: see micro-organisms

Boron Era

Bromine Era

Brown Smoke, the: one of the forms taken by Fyayman retaliation for the incursion of prospectors which had occurred during the Thulium Era.  The shock of its attack on Vyanth brought on the Ytterbium Era.  See The 'Dassan Call.

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Cadmium Era

Caesium Era

Calcium Era

Capfaym Duuv: the psi-sensitive  who communed with the world-spirit to obtain advice for humanity in the crisis at the end of the Thallium Era.  See The Era of Psi.

Carbon Era

Cerium Era

Chelth: the dimension, or universe, looted of much of its energy by the Uranians, thus fuelling the greatness of the Phosphorus Era.  See The Plunderers.

Chlorine Era

Chromium Era


Cobalt Era, the:

Conquered Era, the: sobriquet of the Radium Era (era 88) because during that time most of Syoom was in fact conquered by its enemies - kalyars, Gedars, some Quonians and (in 21 out of the 25 cities) hostile Ghepions.  The four cities which remained free were Vyanth, Skyyon, Lysyon and Pjourth.

contado: the area around a city, subject to it and providing for its needs.


Copper Era

Corrector: the title given to someone who has taken it upon nenself to coerce a Sunnoad, and has got away with it - has succeeded in getting the Sunnoad to see the error of nen's ways. See institutions.

Corruption Ray: the evil weapon sometimes used by one city against another during the Nitrogen Era .  It set up a mental field which somehow attacked the sense of value.  The Ray had the effect of undermining traditions, weakening moral fibre especially with regard to people's attachment to their cultural roots.  It was a way of causing one's enemies to rot from within.  The Ray was destroyed at the end of era 7 (see The First Sunnoad), but was briefly rediscovered and unleashed again in eras 84-85, when it was let loose in more concentrated form by Nehal Fozdak  (see Impostor).

crystal groves:  small forests of crystalline plants, bristling with natural defences and almost immune from attack; the proprietors of the groves, who have spent generations in fostering trust with them, are the only humans who can enter them with impunity.

currency: the basic monetary unit in Syoom is the airved, or "phial-credit", equal in value to a phial of ell-light extracted from the vheic plant and fuelling a skimmer for one hour.  100 airveds = 1 nubner; 10 nubners = 1 smoath; 1000 smoaths = 1 genth (or "megaphial" as we might say).  The physical forms taken by these denominations have varied throughout history.

Incidentally, because of their origin, Uranian currency terms are identical to Uranian measures of energy.

cyborgsthe man-machine hybrids responsible for the disastrous expedition to Solor which brought an end to the Gold Era.  During the subsequent Mercury Era they ruled most of Syoom.  Their power was destroyed by Hevad Notoxt 69546.

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'dassan: see kommassandassan


dlax: (plural dlaxou ) Hemispheric forcefield atop a circular hover-raft.  Invented early in the Phosphorus Era, when such energy-guzzling devices were most used.

Dmara: the first human city.  Before it was a city it was the site of the sivvan.  See The Hydrogen Era.

Dmarnenn: see Liquid Men.

Drainage, the: a so-called anti-psi treatment which Syoomeans underwent during the forty-minute Lead Era.  In fact the psi powers possessed by humanity were not so much destroyed as sublimated or, to use the opposite metaphor, "drained into the race sink", in accordance with the advice given to Capfaym Duuv by the world-spirit. See The Era of Psi.

Dynnt Eshnun: explorer who captured an eopc during the Beryllium Era  He took a blood-sample from the giant bird, and from tests made on this the Rin-Stazel discovered the existence of the dimension of Chelth.  See The Plunderers.

Dynnt Gilvar 48559

Dysprosium Era

Dzolm: colloquial nickname for the Sun-Egg.

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eomasp: A disturbance in the normal rhythm of day and night caused by an exceptional psychic storm, in turn created by the waft of emotion accompanying some great event.  From the end of the Lithium Era onwards, eomasps marked the transition from one era to the next.  It is possible - some say probable - that eomasps also marked the earlier transitions, from eras 1 to 2 and 2 to 3, but the records are unreliable.

eopc: giant bird, wingspan up to 70 yards; the largest known winged creature on Ooranye.  It does not eat or drink, and the mystery of whence it obtained its energy led the researchers of the Rin-Stazel to discover the dimension called Chelth.   See The Plunderers.

eras: see Table of Eras

Erbium Era

Europium Era


evil, problem of: see Mentality

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Fiarr Fosn 723

 First Contact: the date, or the event, of the first radio contact with the Terrestrial ships that went into orbit around Ooranye during the last few lifetimes of the Actinium Era.  The actual date of First Contact was 11,002,739 Ac.  (In Earth terms, the 10th of July, A.D. 3564.) 

flare of arrest: the term given to the event which occupied and defined the Magnesium Era: a worldwide frisson like a ghostly tap on the shoulder, thought to be caused by the action of a Chelthan  entity who had become aware of the attempt by the Uranians to plunder his universe.  See The First Sunnoad.


Fluorine Era

Foam, the

Francium Era

Fyaym: the term given to any area of the world in which a lone wayfarer has a less than 50% probability of surviving a thousand-mile journey.  More generally, "Fyaym" means "the unknown", "the lands outside civilization".

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Gadolinium Era

Gallium Era

gedarssubmen rumoured to have originated from relics of the dying Dmaran sivvan.  They came in a variety of builds and sizes, but their faces were always misshapen like the products of an inexpert sculptor.  The gedars became a general nuisance in the Vanadium Era when, sensing the Nenns' weakness after the Great Winter, they swarmed over Syoom, looting and killing.

genth: see currency

Germanium Era 

Ghepions, thea generic term for many different kinds of sentient machines; all that they have in common is that their intelligence is the result of their own evolution, untended by Man.  Contact with the Ghepions was first made in the Silver Era.  Ghepion-human relations have had a chequered history.  Many Navy men still resent Ghepion infiltration of their High Command in the Platinum Era - see The Sunnoad's Navy.  Also, Ghepions were persecuted in the Thallium Era because of their complicity in the plot of the cyborgs .

Gold Era

gralm: the granular semi-organic "loam" which covers the plains of Ooranye.  In the Lanthanum Era some of it expanded into the Foam which covered much of Syoom and buried its cities.


Grardesh Sponndar, the: nameless criminal mastermind from the city of Grard; opponent of Restiprak Zentonan.  Born in the Hafnium Era, he put himself into suspended animation and awoke in the subsequent, Tantalum Era.  This is one of the very few known cases of a person living in widely separated times not through reincarnation but through mechanical means.

Great Cycle: the period of 100,000 Uranian years (8.4 million Earth years) which is the largest unit of Uranian history.  We are about one-seventh of the way through the current Great Cycle.  Some artefacts and remains from previous Great Cycles exist, though they are few and mysterious.  It is thought that in the next Great Cycle the kalyars will take over from the Nenns as the predominant human culture on Ooranye.

Great Fleet fifteen hundred airships - the largest fleet in history - commanded by Fiarr Fosn 723.  Its purpose was to conquer Fyaym.  Its failure and destruction marked the end of the mighty Phosphorus Era

Great Triangle, the: see Triangle, the  

Gyan Ennye: in his first incarnation, the Jaaxan officer who made the first 'dassan call. In his second incarnation, an eminent Lysyan officer of the Actinium Era.

gvo: semi-kolv; a compound of particulate and non-particulate matter, the latter component left over from the previous universe, and a source of enormous power.  The ovoid mountain called the  Sun-Egg was composed of glowing orange gvo.

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Hafnium Era

Helium Era

Hevad Notoxt 69546

hive minds:  see The Last Great Hive; Sentient Cities 

Holmium Era


Hyala Movoun 1:  the first Sunnoad.  See eras 7 to 14. 

Hydrogen Era, the

hylozoic: pertaining to the doctrine of hylozoicism, that all matter is alive.    The most important instance in Uranian history that suggests this might to some extent be true, is the episode of the Foam

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Idun-Sjalsk: the Sun-Egg.

iedleis: the ultimate metal, the substance of which the disc-on-stems of Uranian cities are composed.  Iedleis is believed to maintain its integrity over a whole Great Cycle.


Indium Era


Iodine Era

insectoids: see Nemaeans 



Ipemenir Honnd: the Jadorian who was energized by the "bank" of unconscious powers which had been accumulated by the Other Syoom.  He saved that land from disaster during the Germanium Era.  See The Age of Spies.

Iridium Era

Iron Era

Iyen Noom 80525

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Jad Darkal 35480


Jommdan: the "high tongue" still spoken by about 21% of the Syoomean population; an elder cousin of Nouuan.  Classical Jommdan in particular is many-layered, in such a way that the apparent length of a text adjusts itself according to the reader's background knowledge of the subject matter.  The more you know, the more the words seem to run together, and shorter it all seems.  Unfortunately, the easier it is for the reader, the harder it is for the writer.  Few have mastered Classical Jommdan.


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Kalishan Voice, the: a telepathic broadcast accidentally triggered by an archaeologist investigating ruins in Oirr.  The 57-minute broadcast - a warning against the Quonians - blanketed Syoom; it comprised the Nickel Era.

kalyar"evolved man" - a vague, general term for a Uranian human being who belongs to one of the strains that, from the Tungsten Era onwards, have evolved away from the norm (the norm assumed to be that of the Nenns). 



kolv: the continuous, non-atomic substance, left over from the previous universe.  Its part-atomic compound, semi-kolv or gvo , was the substance of the Sun-Egg.

kommassandassan: compression into one word of the Nouuan phrase, colloquially translatable as "I am laying my life on the line".  For its significance, see The 'Dassan Call.

Krypton Era

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Lanthanum Era

Lead Era

Lehal Thoal: the first Corrector.  See the history of the Neon Era - The First Sunnoad


Liquid Men: the proto-humans who evolved in the sivvan.  Instead of skin they had a form-field which needed frequent immersion to preserve its integrity; hence they could not travel far from the sivvan, until, late in their history, an energized flexi-suit was developed, which increased their range and enabled one of them to help Tisswa Ardea find the Sun-Egg .  See The Hydrogen Era.

Lithium Era, the

Lotch, the

Lrar Verzak: the first Nenn .

lremd: the adjective pertaining to the noun renl.  Someone who has renl is said to be lremd.

Lrissj: one of the three languages of Syoom.  Spoken by 34% of the population, Lrissj is not at all closely related to Jommdan or Nouuan.  It is spoken in four of the cities - Juxxt, Yoon, Narar and (surprisingly, since it is on the other side of Syoom) Grard.  Apart from these it is the tongue mostly of smaller settlements and farming communities scattered over the length and breadth of Syoom. 

Lutetium Era


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Mad City, the: a nickname for Oso, because of its history during eras 49 and 50, when, under the control of a Ghepion, it tried to conquer and control the rest of Syoom. See The Ghepions.

Magnesium Era

Manganese Era


mascon: mass-concentration; an area of denser-than-average material in the crust or mantle of Ooranye.  Very rarely, due to convection within the mantle, a mascon may surface and take the form of a mountain.  The Sun-Egg was one such mascon.

Much later, in the Bismuth Era, men found it possible to travel by means of the tetrak through the material of Ooranye's crust and mantle, to visit the mascon worlds embedded therein.  See The Mascon Expeditions.

mawo: an aerial corpuscle, about wardrobe-size, fuzzy at the edges and light enough to drift on the wind.  (In the vegetable stage of its life-cycle it is called not a mawo but a vrayn.)  Mawos avoid the presence of man, but nevertheless pose a danger, in that if left alone they will eventually block off huge areas of sky, crowding out other aerial organisms on which living things depend for their light.  In general they are nothing worse than a nuisance during periods in which Syoom is powerful and well-organized.  But they can become a menace when Syoom is relatively weak, and this was especially true during the Lithium Era, when Syoom's economic needs outran its technological capacity. 

Melikon: the village 90 miles outside Skyyon, where - since the end of era 88 - the hut has been sited that is the official residence of the Sunnoad.


Mercury Era


mind-nauts: users of the Sight Projector 

Molybdenum Era


Mount Gnemek: the highest peak on the planet Ooranye.  Its summit reaches out into space.  It was scaled by Restiprak Zentonan.

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Nalre Zitpoidl 4854



narp: a laser-tipped weed which can live for hundreds of human lifetimes on the plains of Ooranye, occasionally shooting down wayfarers and absorbing the wrecks of skimmers.

Nehal Fozdak: claimed by some (including himself) to be the greatest criminal in Uranian history; destroyer of Jersh, murderer of Sunnoad Ahim Trarv 77062 and rediscoverer of the Corruption Ray.  See Impostor.  Fozdak was finally tracked down and killed by the lawmen of the Francium Era.  

Nemaeans: generic term for all the Uranian insectoids - the large flying beings which swarm, particularly in Fyaym, often exhibiting a group intelligence of a malign character.  The destruction of the Great Fleet was carried out by insectoid swarms, possibly under the control of higher entities. 


nen:  the unisex pronoun meaning "he or she".

Nenn: a Uranian human.

Neodymium Era

Neon Era

Nickel Era


Niobium Era

Nitrogen Era: the evil era 7.  See the last part of The Plunderers and the beginning of The First Sunnoad

Noad: the ruler or focus of a city; its chief.  No equivalent exists in Terrestrial history.  Generally a Noad holds office for life, like a king, but is elected, like a president.  A Noad of a healthy city will rule not through beaurocracy but through the quality of renl .  

noadex: the office or institution of Noad.

Norkoten Hall: previously Zdinth Hall but renamed in honour of Taldis Norkoten 64702

Nouuan: the most widespread language of Syoom - currently spoken by 45% of the population.

nubner: see currency



Nyav Yuhlm 80438




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Osmium Era 


Other Syoom, the: an area of civilization, comprising the empires of Yalar and Nii, surrounded by Fyaym and unsuspected by the rest of Syoom until the Gallium Era; it was the object of the Syoomean rescue expedition in that era commanded by Sunnoad Jad Darkal 35480.  See The Age of Spies

Oxygen Era

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Palladium Era


Phosphorus Era, the


Planetary Intelligence, the: see The World Spirit

Platinum Era



Polonium Era

Potassium Era

Praesodymium Era

Promethium Era


Protactinium Era


Pyoan Tatham: the last powerful director of the Rin-Stazel.  He was responsible for the decision to solve the energy crisis by plundering Chelth.  He was killed during the breakout of the captive eopc, during the disastrous day which became known as the Carbon Era.

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Quonians, the: a race of humans, physically only slightly different from the Nenns of Syoom, but considerably different mentally and culturally.  They have discovered the secret of sending objects back in time, in certain limited cases where no paradoxes are thereby created.  The Quonians arrived openly in Syoom during the Copper Era, though already in the last part of the Cobalt Era they had been surreptitiously planting "false pasts" in Syoomean archeological sites.  Their cultural infiltration - amounting to an invasion - failed when their methods were exposed, partly due to the warning given by the Kalishan Voice.  Discredited, they left Syoom at the end of the Copper Era.  They were involved in another invasion which also failed, this time militarily, during eras 38-39.  See The Age of Spies.

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Radium Era

Radon Era



renl: the quality of being able to be at the right place at the right time; of juggling competing demands; of weaving one's way efficiently through complex situations without resort to rules, paperwork or beaurocratic structures.  See mentality.  The strength of renl in the Uranian psyche must be some kind of adaptation to that world, whose immense mysteries would otherwise overwhelm humanity.  Those Nenns who exhibit most renl are apt to become elected as Noads.  The quality first became necessary and evident in the city of Contahl in the Lithium Era.  The adjective lremd means "possessing renl".

Restiprak Zentonan 33337/45329

Revestru, the: the insectoid species which warred with the Wonarr in the early Hydrogen Era.


Rgiohafnarn Dzeld: "Voluntary Contemplation Store" -  proper name of the institution commonly called the Bank of Light .

Rhenium Era: see Rhenium Moment, the

Rhenium Moment, the: Era 75, which lasted five hours.  During this time the world-spirit communicated with the people of Syoom, and especially with the delegates to an international conference meeting in the Hall of Zdinth, Skyyon.  Only gradually over the next era was the message of the Moment understood.  It prevented a general inter-species war between Nenns and kalyars.

Rhodium Era

Rin-Stazel: the scientific institution which grew out of the standing committee established by the Congress of Contahl at the end of the Lithium Era.  During the Beryllium and Boron Eras the Rin-Stazel led research into ways of solving the looming energy crisis caused by the imminent depletion of the Sun-Egg.  Under its last powerful director, Pyoan Tatham, the fateful decision was made, that steps must be taken to plunder the dimension of Chelth.  The Rin-Stazel was disbanded during the troubles of the Nitrogen Era, but its aims were later carried out by Hyala Movoun, the first Sunnoad.

Rubidium Era

Rubidium Fort, the: a fortress at the far point of the salient of Syoom which reached into Fyaym in the direction of the Other Syoom, during era 37.  The fort fell at the end of that era.  See The Age of Spies.

Ruthenium Era

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Samarium Era

Scandium Era

Selenium Era

sfy: the safety-contours (or peril-contours) on Uranian maps.

sfy-50: the boundary between Syoom and Fyaym.  A safety-contour joining all those points on a map which represent places where the chance of surviving a lone journey of 1,000 miles is 50 per cent. 

Sight Projector: the device used to project the sight and in effect the mind of the user over distances, so that far lands could be explored without physical travel.  See The Age of Spies.

Silicon Era

Silver Era

Simulator Project: the cultivation, in the Lutetium Era, of a machine to aid decision-making.  It helped to exonerate Gyan Ennye after the first 'dassan call.  Later it was allowed to fall into disuse, but successors were built and dominated the culture of the Age of the Wise

sivvan: the prebiotic lake, at what is now Dmara , from which the Nenns emerged at the beginning of the Hydrogen Era.

skimmer:  the main personal vehicle used by Uranians.  A skimmer is designed as a one-man flier though it can carry two at a pinch.  It is roughly canoe-shaped, five yards long and at the centre one yard wide.  It cannot fly higher than six yards above ground, except during the risky manoeuvre known as "stormriding".  Top speed: 200 miles per hour.  Its lift is provided by one of the indestructible antigravity units produced in their billions in the Phosphorus Era; its propellant power comes from a related device fuelled by phials of ell-light extracted from the vheic plant. 

skimmjard:  a word literally meaning "pilot of a skimmer"; sometimes used more generally to mean a traveller.

Sky Patrol, the: a Syoomean Navy which flourished during the Cobalt Era


smoath: see currency

Sodium Era

Solor: also dubbed the Numinous Land.  In a way it was the Uranian equivalent of Eden.  Long assumed to be in Fyaym (if its existence was suspected at all), it was discovered to lie in Syoom after all, but it was hard to find, due to its space-stretching and its psychic defences.  The quest for Solor was mainly a preoccupation of the Gold Era.  When at last its defences were breached (by an expedition secretly planned by the cyborgs), Solor seemed to disappear; later it was found still to exist occasionally, but with a new defence more powerful than before, a capacity to induce disbelief in its existence in the mind of any searcher who came too close.

Solor finally, though gradually, faded from history during the Thallium Era. See The Quest for Solor and The Era of Psi.


Spe Dalalt: the officer who played the key part in the counter-deception which foiled the Ghepion plot to infiltrate the Sunnoad's Navy in the Platinum Era.  Turning their own methods against them, he impersonated one of the Ghepions and discovered their headquarters.  In so doing he also unexpectedly discovered the reality behind the myth of Solor . 

sponnd: the personal weapon most commonly carried by Uranians.  It is basically a laser, usable either in blade-mode or bolt-mode.  It is often referred to with great respect, with the honorific initials of its owner.

sponndar: in all three languages of the Nenns this word means, literally, "a person armed", or "warrior", and more loosely is used as a vague title of respect like our "Sir" or "Madam".  It can also correspond to our use of the word "gentleman", mostly in its modern, imprecise sense, but also, at times during the Vanadium Era, in its old sense of a man who does not have to live by manual work or trade.

spotlit: adjective describing those who, from era 59 onwards, seem to live lives marked by unusual or dramatic events, different from the humdrum lives of ordinary, "unspotlit" people.  See The Praesodymium Spotlight.

Strontium Era

Sulphur Era

Sun-Egg, the: an approximately globular mascon composed of semi-kolv or gvo , which surfaced due to crustal convection; its discovery marked the end of the Hydrogen Era and a quantum leap in the energy resources of Uranian mankind.  At the time of its discovery (at the end of the Hydrogen Era) the Sun-Egg was an ovoid mountain; by the Nitrogen Era it had all but disappeared; during the Sodium Era its last fragments were completely used up.

Sunnoad: the Noad of Noads; holder of the highest and most revered office in Syoom.  A Sunnoad is the only person entitled to wear the golden cloak of Skyyon, and to have a number after nen's name - the number denoting nen's place in the list of sunnoads.  Nen's duties vary according to the period of history concerned.  At the very least a Sunnoad has enormous prestige and advisory influence; usually nen has the right to command the military forces of Syoom in an international emergency; sometimes nen's powers are greater and more continuous, above all in the notorious case of Tu Rim 78860.

sunnoadex, the: the office of Sunnoad. See institutions.

Sunnoad's Navythere have been many instances in Syoomean history of an international force of airships loyal to the Sunnoad rather than to any particular city.  The most renowned and successful of these was the one which patrolled the skies during the Iridium Era, embodying the ideals of Taldis Norkoten 64702.  This was the Navy's golden age.  Its reputation was tarnished in the Platinum Era, when its High Command was infiltrated by Ghepions .

Syoom: the term literally applies to any area of the world in which a lone wayfarer has a more than 50% probability of surviving a thousand-mile journey.  More loosely, "Syoom" means "the area of civilization", "the civilized world". See Syoom and Fyaym.

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Taldis Norkoten 64702

Tantalum Era

tax of awareness:  the "tax on consciousness" levied by city minds on the minds of their inhabitants; when conditions are good, from each individual the contribution is unnoticeably small.

Technetium Era ;

Teleological Guilds, the: organizations whose origins lie back in the Cobalt Era but which flourished only during the Zirconium and Niobium Eras.  See The Institutes of Fate.  The purpose for which they came into being, was to make discoveries about human destiny on Ooranye.  By studying the racial and planetary consciousness, they hoped to uncover the broad outline of fate.  This activity, on the borderline between science and superstition, never yielded much in the way of definite results.  By the end of era 41 the Guilds were mere sociopolitical societies, promoting various mundane aims.

One of the guilds was revived during the Tungsten Era and caused trouble by observing that the kalyars were not destined to flourish until the next Great Cycle.

Tellurium Era 

Terbium Era

tetrak: vehicle invented and used during the Bismuth Era.  It was able to phase into vibrational modes which allowed it to slide through solid matter.  It was used to explore the interior of Ooranye and visit the mascon worlds. See The Mascon Expeditions

Thallium Era

Thorium Era: see Thorium Whisper, the

Thorium Whisper, the: A hint received by the minds of Syoom, on the day of the departure of the Second Great Fleet for Arclour.  Sunnoad Iyen Noom 80525 has since admitted that the Whisper may have been triggered by his historic decision to allow the use of the tetrak's method of transport by his ships.  This bold and risky decision led to the success of the enterprise which the Fleet had undertaken, and led also, we believe, to a sharp separation between two alternate probability universes, the one in which he decided thus, and the one in which he did not.  The latter continued with the Thorium Era; the former - ours - went straight on to the eight-day Protactinium Era, the triumph of the Fleet, and the meeting of worlds.  See The Assault on Arclour.

throom, the: see micro-organisms

Thulium Era 

Tin Era

Titanium Era

Tjoren: the member of the avian species taharen, who offered Syoom help against the White Sun but who was then murdered by Sunnoad Nalre Zitpoidl 4854, who suspected his motives.  This event ushered in the Titanium Era - the era of the Great Winter, thought to be the work of weather-controllers in retaliation for the murder.

Tisswa Ardea: the human discoverer of the Sun-Egg (she may have had help from one of the Liquid Men ). See The Hydrogen Era and Syoom and Fyaym.


Triangle, the: An alliance between Ao, Skyyon and Vyanth, which, during the Osmium Era, patrolled the area bounded by those three great cities.  More loosely the Triangle is held to refer to the lands themselves - a triangular area roughly equilateral, roughly 6,000 miles on a side; a realm of unusual peace and security. 

Tu Rim 78860 

Tungsten Era 


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Unity Club: the international secret society which, during the latter days of the Hydrogen Era, plotted the great change that was to come, solving the great problem of that age - the psychological problem of how to live on the giant planet while still retaining human identity.  The solution lay in the concepts Syoom and Fyaym.

Uranian: (adjective:) pertaining to the planet Ooranye - also known as Uranus

Uranium Era

A B C D E F G H I J K L M N O P Q R S T U  W X Y Z


Valim Poand: Noad of Vyanth at the end of the Vanadium Era who ended that era by freeing his city's slaves.  This led to the upheaval of the pan-Syoomean slave revolt and the subsequent revolutions (eras 24-26).

Vanadium Era





Vraik, the

vrayn: the vegetable stage of the mawo life-cycle.  See Lithium Era.



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wayfarer: member of the profession of voyagers who undertake to provide statistics for the safety-contours on Uranian maps.  They provide these data by the mere fact of surviving or not surviving their journeys.  Any additional information or understanding they achieve is pure bonus, beyond the call of duty.

White Sun, the: the gleaming sphere which rose through the gralm during the reign of Sunnoad Nalre Zitpoidl 4854, and is believed to have caused the feeling of unfamiliarity with everyday objects which then began to plague Syoom. 

Wonarr, the: the species of laser-tipped weed (ancestral relative of the narp) whose war with the Revestru made the environment dangerous to man during the early Hydrogen Era.

world spirit, the

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Xenon Era


A B C D E F G H I J K L M N O P Q R S T U V W X  Z






Yr, City of Mists: a mobile, floating city launched during the Zirconium Era.  It seems to have found some way of making itself invisible.  Reports of its destruction are suspect; the consensus of opinion is that it still exists. 

Ytterbium Era

Yttrium Era 




Zairm, the


Zdinth Hall: the hall in the Palace of Skyyon, scene of the Rhenium Moment.  Later renamed Norkoten Hall.

Zinc Era 

Zirconium Era




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