Definition of "whalefish" [whalefish]

• Any fish of the Cetomimiformes order of ray-finned fish. (noun)

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• "An interesting case where male, female, and larval forms of deep-sea whalefish were separated into three different families, and now resolved."
• "Cetomimidae, a type of whalefish, had been known since the 19th century, but only females had been found."
• "There's a whale, there's a whale, there's a whalefish, he cried"