/ Thesaurus / P Synonyms of polymyositis Find synonyms for: Noun1. polymyositis, myositisusage: myositis characterized by weakness of limb and neck muscles and much muscle pain and swelling; progression and severity vary among individualsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language