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524 TRILL HOMEWORLD THE STAR TREK ENCYCLOPEDIA: A REFERENCE GUIDE TO THE FUTURE Trill homeworld. Class-M planet that is home to the joined species memories of previous joinings. (“The Host" [TNG], “Emissary” known as the Trill. (“Invasive Procedures” [DS9)). Interesting [DS9), “Dax” [DS9)). SEE: Dax, Curzon; Dax, Jadzia (pictured); geological formations on the Trill homeworld include the Tenaran Kareel; Odan, Ambassador. Despite the fact that a symbiont ice cliffs and the caves of Mak'ala. (“Equilibrium [DS9)). The retains memories in subsequent joinings, Trill society very strongoceans on planet Trill are purple. (“Past Tense, Part I" (DS9)) ly disapproves of reassociation of subsequent hosts, in cases where previous hosts had been married (“Rejoined” [DS9)). Trills" — o species don't survive when the Trill moves to the next host. Trills hands are naturally cold. Sometimes friendships with other - " are highly allergic to insect bites, as the toxins released interfere - with the biochemical connections between the host and the symbiont. (“The Siege” [DS9)). Trill hosts sometimes have sexual feelings, but they do their best to rise above them, at least according i to Jadzia Dax. (“A Man Alone" [DS3]). They do not have to uphold commitments of the previous hosts. (“Blood Oath” [DSs9)) Certain Trill symbionts can be severely damaged by beaming, which is why Odan insisted on using the shuttlecraft in “The Host" (TNG). Other Trills, including Jadzia Dax, don’t seem to have the same problem.

trillium 323. Mineral substance found on planet Caldonia Negotiator Devinoni Ral arranged to acquire rights to the Caldonians’ trillium 323 as part of the Chrysalian bid for the Barzan wormhole in 2366. (“The Price’ [TNG]). Trill Symbiosis Commission. Powarful trillium. Gemstone traded on planet Organia. Spock posed as a Trill government body that oversees 4 trader dealing in kevas and trillium. (“Errand of Mercy [TOS]) the testing, selection, and joining Arne Darvin, in near-exile on Cardassia Prime in 2373, also of Trill humanoid hosts with sym- posed as a dealer in trillium. (“Trials and Tribble-ations” (DS9) bionts. The Symbiosis Commission maintained strict guidelines for those trinimbic interference. Powerful energy disturbance in the host candidates, as it was commonly upper atmosphere of a Class-L planet. Trinimbic interference can believed that only one in a thousand render sensors and transporters ineffective and can cause heavy Trill humanoids was capable of being atmospheric turbulence. (“The 37's" [VGR]) joined, and to join an unsuitable host would result In rejection of the symbiont within a matter of days. trinitrogen chloride. Chemical Trinitrogen chloride, also (“Equilibrium [DS9)). Audrid Dax was, at one known as TNC, was used as a cleaning solution. TNC could time, head of the Symbiosis Commission. Curzon Dax also also be used in some types of plasma grenades. The chamserved on the Commission. (‘Facets" [DS9)). When Jadzia Dax bered plasma grenade used in an attempted assassination of fell ill in 2371, her friends leamed that nearly half the Trill population ~~ Gul Dukat on station Terok Nor in 2367 contained TNC (“Things was capable of being joined. This fact was concealed by the Past” [DS9)). Symbiosis Commission for fear that the symbionts, available in limited numbers, would become commodities to be bought and triolic waves. By-product of an energy source employed by the sold. Dax's friends agreed to keep this secret in order to gaincom- beings on planet Devidia Il. The energy source had deleterious mmission assistance to save her life. SEE: Dax, Joran. effects on most living tissue, except for life-forms with microcentrum cell membranes. (“Time's Arrow, Part I" [TNG]) Trill. A joined species comprised of a humanoid host and a small vermiform symbiont that lives in an internal abdominal pocket of Triona System. Star system located in a remote sector. The site the host body. Most of the personality and memories of the Trill of a Starfleet outpost to which Lieutenant Keith Rocha was reside in the symbionts, which are extremely long-lived, although assigned in 2369. While at the Triona System, Rocha was apparthe host also contributes personality traits to the joined life-form. ently killed by coalescent organisms that subsequently Upon the death of a host body, a Trill symbiont is usually trans- assumed his form. (“Aquiel” [TNGI]) planted into another host. (“The Host" [TNG]). For a joined Trill, nothing was more important than protecting the life of the sym- trionic initiators. Component in starship warp cores. In rare cirbiont. (“Rejoined” [DS9]). cumstances, trionic initiators could create strange side-effects Trill hosts enter voluntarily into their association with the Sym- such as warp bubbles, subspace funnels, and other subspace biont, and in fact there is intense competition among potential deformations. (“Interface [TNG]). SEE subspace phenomena; hosts to determine who will be accorded this high honor. Only one subspace technology Trill candidate in ten is chosen to be joined with a symbiont. The decision of who is to be allowed to be joined is the responsibility of ~~ trionium. Chemical compound. Trionium was detected by the Symbiosis Evaluation Board. Improper joining is believed to Enterprise-D sensors in nebula FGC-47 (“Imaginary Friend” cause damage to both host and symbiont. (“Invasive Procedures” [TNG]) [DSY)). SEE: Trill Symbiosis Commission. Children are directed by their parents towards becoming a host. While the influence of tripamine. Biochemical substance. Tripamine can sometimes be the symbiont is very strong, good host candidates can balance detected as a residue in the cerebral cortex following a temporal the influence of the symbiont with their own shift. (“All Good Things..." [TNG]) interests, and hence produce the best possi3 ble merge of the two personalities. (“Playing Tripoli, U.S.S. Federation starship, Hokule'a class, Starfleet regGod" [DS9]) istry number NCC-19386. The Tripoli was the ship that discovHosts are accepted into their mid-twenties. ered the android Data at the remains of the Federation colony at Once joined, the host and symbiont become Omicron Theta in 2338. The crew of the Tripoli activated Data, biologically interdependent, and after 93 who later went on to become a member of Starfleet. (“Datalore” PZ hours. neither can survive without the other. [TNG]). The Tripoli was decommissioned and was relegated to - lll The resulting new joined life-form is consid- Surplus Depot Zed-15 on planet Qualor II. In 2368, the Tripoli ered to be another person. although it retains was stolen by Romulan operatives. (“Unification, Part I" [TNG])