any of various plants of the genus Cereus, of the cactus family, having large, usually white, funnel-shaped flowers.
any of several related, similar plants, especially of the genera Hylocereus, Nyctocereus, and Selenicereus.
any tropical American cactus of the genus Cereus, esp C. jamacaru of N Brazil, which grows to a height of 13 metres (40 feet)
any of several similar and related cacti, such as the night-blooming cereus
cactus genus, 1730, from Latin cereus “waxen, waxy,” from cera “wax” (see cere (n.)). So called from its shape, which suggests a candle.
Center for Environmental Research Information Historical Examples
a white-to-yellow, heavy powder, cerium dioxide, CeO 2 , usually derived from cerium nitrate by decomposition with heat: used chiefly in ceramics, glass polishing, and decolorizing. Historical Examples noun another name (not in technical usage) for ceric oxide
containing cerium, especially in the tetravalent state. adjective of or containing cerium in the tetravalent state
ceria. noun a white or yellow solid used in ceramics, enamels, and radiation shields. Formula: CeO2 Also called cerium dioxide, ceria