tri: three (for derivatives cf. du); -o: any three things or persons united; trio, triade, triplet, trey; -a-dek: thirty; tri-edro: (tri-edra-angulo): (geom.) trihedral; -yara: triennial; -esma lasta: antepenultimate; -uno, uneso: trinity; -opla krono: triple crown; -seko: trisection; tri-angul-o: (geom., mus.) triangle; tri-angul-iz-o, -uro: triangulation. — DEFIRS
trias-o*: (geol.) Trias, Triassic period.
tribon-o: tribune: a Roman magistrate. Ex.: La tribono acensis sur la tribuno. — DEFIRS
tribu-o: tribe.— DEFIS
tribul-ar: (tr.) to cause tribulation to, to distress, afflict. Ta tempo tribulas nia psiki. La tribuli di autoro. — DEFIS
tribun-o: (rostrum); grandstand (at races, etc.); orgeno- -o: organ loft. — DeFIRS
tribunal-o: tribunal, court (of justice), bench, judgement seat; -o kriminala: criminal court, assize court. — DEFIRS
tribut-ar: (intr.) to pay tribute (ad ulu); -o: t.; -anta (ad), -anto, -ero: tributary. Ex.: Tributar a Caesar. Ta lando esas tributanta ad Anglia. — DEFIS
triceps-o*: (anat.) triceps. — DEFS
tricikl-o: tricycle. — EFIS
tri-dent-o: trident: a three-pronged fork.
«triduum»: (R.C. rel.) prayers continuing for three days.
trifoli-o: (bot.) trefoil, clover, shamrock. — DEFIS
triftong-o: (gram.) triphthong. Def.: Grupo di tri vokali formacanta un silabo; V-486. — DEIRS
triglif-o: (arch.) triglyph. — DEFIRS
trigonometri-o: trigonometry. — DEFIRS
trigram-o: trigram, trigraph. Def.: Grupo di tri literi reprezentanta un sono; V-487.
trikin-o: trichina, thread-worm (Trichinella spiralis). — DEFIRS
trikinos-o: (med.) thrichinosis. — DEFIRS
triklin-a: (cryst.) triclinic. — DEFIS
trikogin-o*: (bot.) trichogyne. — DEFIS
tri-kolor-a: tricolo(u)red.
tri-korn-a: three-horned; three-cornered; -a chapelo: (od, trikorno); three-cornered hat, shovel-hat.
trikot-ar: (tr.) to knit (a fabric) (cf. krochar); -ilo: knitting needle or machine. — F
triktrak-o: tricktrac: a kind of backgammon, — DEFI
tril-ar: (tr., mus.) to trill. — DEFIS
tri-later-a, -o: trilateral.
trilem-o*: (log.) trilemma. — DEFIS
trilion-o: trillion (1,000,000³). — DEFIRS
trilobit-o*: (biol.) trilobite. — DEFIS
tri-lingu-a: trilingual.
trilogi-o: trilogy. — DEFIRS
tri-mast-o (od tri-masta navo): (nav.) a three-master (ship).
tri-mestr-o: trimester: three months’ period; (cf. semestro). — DEFIRS
tri-nomi-o*: (math.) trinomial. — DEFIRS
triolet-o: (poet.) triolet; (mus.) triplet.
trip-o, -i: tripe(s); -vend-eyo: tripeshop; -sociso: chitterling (of pigs); -kordo: catgut. — EFIRS
tri-ped-o: tripod, trivet.
triplik-o*: (jur.) sub-rejoinder.
triplikat-o: triplicate: a third copy. — DEFIS
tripoli-o: tripoli, rotten-stone (for polishing metals). — DEFIS
triptik-o: (paint.) triptych. — DEFIS
trirem-o: (antiq.) trireme. — DEFIRS
tri-silab-a: trisyllabic; -o: trisyllable.
trism-o*: (med.) trismus: lockjaw; (cf. tetanar).
trist-a: (of persons or things) sad, sorrowful, mournful, cheerless, dispirited, doleful, gloomy; -ega: lugubrious; -eso: sadness, dreariness; -igar: to sadden, throw gloom over. Ex.: Trista informo, vizajo, adio. La morto di mia amiko tristigas me. Ant.: Gaya, joy-oza, kontenta. — FIS
triton-o: (myth.) Triton; (mollusc) triton. — DEFIRS
tritur-ar: (tr.) to triturate (cf. pistar). — EFIS
triumf-ar: (intr.) to triumph, be triumphant (pri); -e: in t.; -ala procesiono: triumphant procession; persono -anta: triumphant person; -arko: arch of t.; -ar pri sua enemiki: to t. over one’s enemies. — DEFIRS
triumvir-o: triumvir; -aro, -eso: (collect., office) triumvirate. — DEFIRS
tri-un-o, -eso: (also theol.) trinity.
trivial-a: trivial, trite, commonplace, stale; -eso: triteness; -ajo: triviality, banality; -a verajo: truism; -igar: to make banal. Ex.: Trivial expresuro, stilo. — DEFIRS
tro(e): (adv.) too, too much (Note: Tro may be used by itself before verbs, adjectives and adverbs, but with substantives, multa etc. is added: el tro amas il; tro multa homi); -multa, granda, plena, frua: too many, great, full, early; il drinkas troe: he drinks too much; lu tro (multa) mentias: he lies too much; -a: too, over-great, excessive; troa bruiso, od, tro granda bruiso: too much noise; un glaso troa (od, tro multe): one glass too much. — FI
trofe-o: trophy. — DEFIRS
trog-o: trough (as for animals); hod, tray (as for carrying mortar); (cf. vazo), -o-roto: bucket (of a water-wheel); -edo: hodful, troughful. — De
troglodit-o: (man or animal) troglodyte: cave dweller. — DEFIS
«troika»: (Russian) troika.
trokanter-o*: (anat., zool., ent.) trochanter. — EF
trokar-o: (surg.) trocar. — DEFIS
troke-o: (poet.) trochee. — DEFIR