rorqual(redirected from Balaenoptiidae)
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Any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small, pointed dorsal fin, and including the blue whale and the humpback whale.
(Animals) any of several whalebone whales of the genus Balaenoptera, esp B. physalus: family Balaenopteridae. They have a dorsal fin and a series of grooves along the throat and chest. Also called: finback
[C19: from French, from Norwegian rörhval, from Old Norse reytharhvalr, from reythr (from rauthr red) + hvalr whale]
any of several whales of the genus Balaenoptera; finback.
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|Noun||1.||rorqual - any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin|
baleen whale, whalebone whale - whale with plates of whalebone along the upper jaw for filtering plankton from the water
Balaenoptera physalus, common rorqual, fin whale, finback, finback whale - large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific