/ Thesaurus / S Synonyms of sterna hirundo Find synonyms for: Noun1. sea swallow, Sterna hirundo, ternusage: common tern of Eurasia and America having white black and grey plumageWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language