Trochoid, trō′koid, n. the curve traced by a fixed point in a wheel which rolls in a right line.—adjs. Trō′choid, -al. [Gr. trochæidēs, round like a wheel—trochos, wheel, eidos, form.]
Troctolite, trok′tō-līt, n. a variety of Gabbro composed of white feldspar and dark olivine.
Trod, trod, n. (obs.) tramp, track.—Hot trod (Scott), the pursuit of moss-troopers. [Tread.]
Trod, Trod′den, pa.t. and pa.p. of tread.
Trode, trōd, n. (Spens.) tread, footing. [Tread.]
Troggs, trogz, n.pl. (Scot.) clothes.—n. Trog′gin, peddlers' goods.
Troglodyte, trog′lō-dīt, n. a cave-dweller.—adjs. Trog′lodyte, Troglodyt′ic, -al, cave-dwelling.—n. Trog′lodytism. [Fr.,—Gr. trōglodytēs—trōglē, a cave, dyein, to enter.]
Trogon, trō′gon, n. one of a family of tropical and esp. South American birds of the order Picariæ, with brilliant plumage—the most celebrated species the Quetzal or Resplendent Trogon of Guatemala.—adj. Trō′gonoid.
Troic, trō′ik, adj. Trojan.
Troika, troi′ka, n. a Russian vehicle having three horses abreast. [Russ. troe, troi, three.]