英语词源字典 - 在线词源网站

trifecta (n.)[trifecta 词源字典]: 1974, from tri- + perfecta.[trifecta etymology, trifecta origin, 英语词源]
trifid (adj.): "divided into three lobes," 1620s, from Latin trifidus "cleft in three," from tri- "three" (see tri-) + -fid. This adjective probably inspired triffid, the name of the three-legged walking poisonous plants in John Wyndham's novel "The Day of the Triffids" (1951).
trifle (n.): c. 1200, trufle "false or idle tale," later "matter of little importance" (c. 1300), from Old French trufle "mockery," diminutive of truffe "deception," of uncertain origin. As a type of light confection from 1755.
trifle (v.): "treat lightly," 1520s, from trifle (n.). Earlier "cheat, mock" (c. 1300). Related: Trifled; trifling.
trifocals (n.): 1899, from bifocals with tri-.
trig (adj.): "smart, trim," c. 1200, from Old Norse tryggr "firm, trusty, true," from Proto-Germanic *treuwaz- (see true (adj.)). A Scottish and northern word only until 19c. Related: Trigness.
trig (n.): 1895 as a shortening of trigonometry.
trigeminal (adj.): 1815, from Latin trigeminus "born in threes," as a noun, "triplets;" from tri- (see tri-) + geminus "born at the same birth" (see geminate (adj.)).
trigger (n.): "device by means of which a catch or spring is released and a mechanism set in action," 1650s, earlier tricker (1620s), from Dutch trekker "trigger," from trekken "to pull" (see trek). Tricker was the usual form in English until c. 1750. Trigger-happy is attested from 1942.
trigger (v.): 1930, from trigger (n.). Related: Triggered; triggering.
triglyceride (n.): 1860, malformed from tri- + glyceride. So called for the three radicals which replace the three hydrogen atoms.
trigonometric (adj.): 1811; see trigonometry + -ic. Related: Trigonometrical (1660s).
trigonometry (n.): "branch of mathematics that deals with relations between sides and angles of triangles," 1610s, from Modern Latin trigonometria (Barthelemi Pitiscus, 1595), from Greek trigonon "triangle" (from tri- "three" (see tri-) + gonia "angle" (see -gon)) + metron "a measure" (see meter (n.2)).
trike (n.): short for tricycle, 1883.
trilateral (adj.): 1650s, from Late Latin trilaterus "three-sided;" see tri- + lateral. The Trilateral Commission (representing Japan, the U.S., and Europe) was founded 1973. Related: Trilateralism; trilaterally.
trilby (n.): type of hat, 1897, from name of Trilby O'Ferrall, eponymous heroine of the novel by George du Maurier (1834-1896), published in 1894. In the stage version of the novel, the character wore this type of soft felt hat. In plural, also slang for "feet" (1895), in reference to the eroticism attached in the novel to the heroine's bare feet. Related: Trilbies.
trilemma (n.): 1670s, from dilemma + tri-.
trilingual (adj.): "involving three languages," 1834, from tri- + Latin lingua "language," literally "tongue" (see lingual). Latin trilinguis meant "triple-tongued," and was used of Cerberus.
trill (n.): 1640s, from Italian trillio, triglio "a quavering or warbling in singing," probably ultimately of imitative origin. The verb is 1660s, from Italian trillare "to quaver, trill." Related: Trilled; trilling.
trillion: 1680s, from French trillion, from Italian trilione; see tri- + million. In the U.S., the fourth power of a thousand (one thousand billion, 1 followed by 12 zeroes); in Great Britain, the third power of a million (one million billion, 1 followed by 18 zeroes), which is the original sense. Compare billion.