/ Thesaurus / F Synonyms of family rhincodontidae Find synonyms for: Noun1. Rhincodontidae, family Rhincodontidae, fish familyusage: small-toothed sharks comprising only one speciesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language