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Definition of Balaenoptera borealis
1. Noun. Similar to but smaller than the finback whale.
Exact synonyms: Sei Whale
Generic synonyms: Razorback, Rorqual
Group relationships: Balaenoptera, Genus Balaenoptera
Generic synonyms: Razorback, Rorqual
Group relationships: Balaenoptera, Genus Balaenoptera