(zoology) the flexible region between the prothorax and head in insects
a combining form meaning “whale,” used in the formation of compound words: cetane.
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n. order of marine mammals containing whales, 1830, Modern Latin, from Latin cetus “any large sea creature” (whales, seals, dolphins), from Greek ketos “a whale, a sea monster,” of unknown origin, + -acea. Hence cetology “the study of whales,” first attested 1851 in “Moby Dick.”
belonging to the Cetacea, an order of aquatic, chiefly marine mammals, including the whales and dolphins. a cetacean mammal. adjective 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, […]