/ Thesaurus / B Synonyms of balaenoptera acutorostrata Find synonyms for: Noun1. lesser rorqual, piked whale, minke whale, Balaenoptera acutorostrata, rorqual, razorbackusage: small finback of coastal waters of Atlantic and PacificWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language