"cetacean" in the noun sense
1. cetacean, cetacean mammal, blower
large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales dolphins porpoises narwhals
"cetacean" in the adjective sense
1. cetacean, cetaceous
of or relating to whales and dolphins etc
Source: WordNet® (An amazing lexical database of English)
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