/ Thesaurus / N Synonyms of nemertine Find synonyms for: Noun1. ribbon worm, nemertean, nemertine, proboscis worm, wormusage: soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contractWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language