sei whale(redirected from Balaena borealis)
Also found in: Thesaurus.
A baleen whale (Balaenoptera borealis) having a grayish body with a whitish underside, a curved dorsal fin, and grooves on the throat.
[Partial translation of Norwegian seihval; see sei.]
(Animals) a rorqual, Balaenoptera borealis
[C20: from Norwegian seihval, from sei coalfish (see saithe) + hval whale: so called because it follows coalfish in search of food]
a rorqual, Balaenoptera borealis, inhabiting all seas.
[1915–20; < Norwegian seihval]
Switch to new thesaurus
|Noun||1.||sei whale - similar to but smaller than the finback whale|
rorqual, razorback - any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin