Sei-whale definition

A baleen whale (Balaenoptera borealis) having a grayish body with a whitish underside, a curved dorsal fin, and grooves on the throat.
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A rorqual (Balaenoptera borealis) with a light-gray or bluish back, found in all seas.
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A whale of the rorqual family (Balaenoptera borealis)
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Other Word Forms

Noun

Singular:
sei-whale
Plural:
sei-whales

Origin of sei-whale

  • Partial translation of Norwegian seihval sei

    From American Heritage Dictionary of the English Language, 5th Edition

  • Adapted from Norwegian seihval, with the second half translated.

    From Wiktionary