belonging to the Cetacea, an order of aquatic, chiefly marine mammals, including the whales and dolphins.
a cetacean mammal.
of, relating to, or belonging to the Cetacea, an order of aquatic placental mammals having no hind limbs and a blowhole for breathing: includes toothed whales (dolphins, porpoises, etc) and whalebone whales (rorquals, right whales, etc)
1836, from Cetacea, name of the order of marine mammals, + -an. As an adjective from 1839.
Any of various, often very large aquatic mammals of the order Cetacea, having a hairless body that resembles that of a fish. Cetaceans have an elongated skull, a flat, horizontal tail, forelimbs modified into broad flippers, and no hind limbs. They breathe through blowholes located usually at the top of the skull. Whales, dolphins, and porpoises are cetaceans. See more at baleen whale, toothed whale.
a colorless, liquid hydrocarbon of the alkane series, C 16 H 34 , used as a solvent and in cetane number determinations. noun a colourless insoluble liquid alkane hydrocarbon used in the determination of the cetane number of diesel fuel. Formula: C16H34 Also called hexadecane cetane (sē’tān’) A colorless liquid hydrocarbon derived from petroleum. It […]
a measure of the ignition quality of a diesel engine fuel by comparison with various mixtures in which the alpha form of methylnaphthalene is given a standard value of 0 and cetane is given a standard value of 100. noun a measure of the quality of a diesel fuel expressed as the percentage of cetane […]
Romanian name of Belgorod-Dnestrovsky. a seaport in SW Ukraine, on the Black Sea. noun the Romanian name for Belgorod-Dnestrovski