Balaenoptera physalus ba·lae·nop·teraphysalus uncommon noun 1. large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific Synonymsfinbackfinback whalefin whalecommon rorqualBalaenoptera physalus Related words Broader terms rorqual Parts Balaenoptera WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
