Trilingual, trī-ling′gwal, adj. consisting of three tongues or languages.—Also Triling′uar. [L. tres, three, lingua, tongue.]
Triliteral, trī-lit′ėr-al, adj. consisting of three letters.—n. Trilit′eralism. [L. tres, three, litera, a letter.]
Trilith, trī′lith, n. a form of megalithic monument consisting of two upright stones supporting another lying crosswise—also Trī′lithon.—adj. Trilith′ic. [Gr. treis, three, lithos, stone.]
Trill, tril, v.t. and v.i. to shake: to utter with a tremulous vibration, to quaver: to pronounce with a quick vibration of the tongue.—n. a quaver or tremulous vibration, warbling. [It. trillare, to shake; imit.]
Trill, tril, v.i. to trickle: (obs.) to twirl. [Scand., Sw. trilla, to roll.]
Trilling, tril′ing, n. a compound threefold crystal: any one child of a triplet.
Trillion, tril′yun, n. a million raised to the third power, or multiplied twice by itself: in France, a thousand multiplied by itself three times, a million million.—adj. Trill′ionth. [Fr.,—L. tres, three, Low L. millio, a million.]
Trillium, tril′i-um, n. a North American genus of low perennial herbs of the lily family—including wake-robin, three-leaved nightshade, &c.
Trilobate, -d, trī-lō′bāt, or trī′lō-bāt, -ed, adj. having three lobes.—Also Trī′lobed.
Trilobite, trī′lō-bīt, n. one of an order of fossil crustacea entirely confined to the Paleozoic rocks.—adj. Trilobit′ic.