Roburite, rob′ū-rīt, n. a flameless explosive, composed of chlorinated dinitro-benzene mixed with sufficient ammonium nitrate to completely oxidise it.
Robust, rō-bust′, adj. of great strength or vigour: requiring strength: rude, rough.—adj. Robust′ious (Milt.), violent, rough.—adv. Robust′iously.—n. Robust′iousness.—adv. Robust′ly.—n. Robust′ness. [Fr.,—L. robustus—robur, oak.]
Roc, rok, n. an immense fabulous bird, able to carry off an elephant—also Rok, Ruc, Rukh.—Roc's egg, a mare's nest. [Pers. rukh.]
Rocaille, rō-kal′-ye, n. a scroll ornament of the eighteenth century.
Rocambole, rok′am-bōl, n. a plant of the same genus with garlic, onion, leek, &c., long cultivated in kitchen-gardens.—Also Rok′ambole.
Roccella, rok-sel′a, n. a genus of parmeliaceous lichens, yielding dyers' archil or orchil.—adjs. Roccel′lic, Roccel′line. [Cf. Archil.]
Roccus, rok′us, n. a genus of serranoid fishes, including the rock-fish or striped bass of the United States.
Rochea, rō′kē-a, n. a genus of plants of the order Crassulaceæ. [From the botanist Laroche.]
Rochelle-powder, rō-shel′-pow′dėr, n. seidlitz-powder.—n. Rochelle′-salt, the popular name of the tartrate of soda and potash discovered in 1672 by a Rochelle apothecary named Seignette.
Rochet, roch′et, n. a close-fitting fine linen or lawn vestment proper to bishops and abbots: a mantlet worn by the peers of England during ceremonies. [O. Fr., dim. of Low L. roccus—Old High Ger. roch (A.S. rocc, Ger. rock), a coat.]