Rotifer, rōt′if-ėr, n. one of a class of minute aquatic animals, popularly called wheel-animalcules, with an anterior equipment of cilia whose movements suggest a rapidly rotating wheel:—pl. Rotif′era.—adjs. Rotif′eral; Rotif′erous; Rō′tiform, wheel-shaped: (bot.) having a short tube and spreading limb. [L. rota, a wheel, ferre, to carry.]

Rotl, rot′l, n. an Arabian pound of twelve ounces.

Rotonde, rō-tond′, n. a ruff worn during the beginning of the 17th century: a cope. [Fr.]

Rotor, rō′tor, n. a quantity having magnitude, direction, and position. [Rotator.]

Rotten, rot′n, adj. putrefied: corrupt: decomposed: unsound: treacherous: fetid: friable, as rottenstone.—adv. Rott′enly, in a rotten manner: defectively.—ns. Rott′enness; Rott′enstone, a soft and earthy stone powdered to polish brass, &c.—v.t. to polish with rottenstone. [Rot.]

Rottlera, rot′ler-a, n. a genus of Indian euphorbiaceous plants now included under Mallotus, yielding kamila (q.v.) dye.

Rottolo, rot′ō-lō, n. a Levantine weight. [It.]

Rotula, rot′ū-la, n. the patella or knee-pan: one of the five radial pieces in the dentary apparatus of the sea-urchin.—adjs. Rot′ūlar; Rot′ūliform.

Rotund, rō-tund′, adj. round: spherical: convexly protuberant.—ns. Rotun′da, Rotun′do, a round building, esp. with a dome, as the Pantheon at Rome.—adjs. Rotun′dāte, rounded off, specifically noting bodies rounded off at the end; Rotundifō′lious, having round leaves; Rotun′dious, Rotundō′vate (bot.), egg-shaped.—ns. Rotund′ness, Rotun′dity, globular form.—adj. Rotund′-point′ed, bluntly pointed. [L. rotundusrota, a wheel.]

Roture, rō-tūr′, n. in Canadian law, a grant made of feudal property: plebeian rank in France.—n. Roturier (ro-tü-ri-ā′), a plebeian. [Fr.,—Low L. ruptura, ground broken by the plough—L. rumpĕre, ruptum, to break.]