/ Thesaurus / S Synonyms of synovial fluid Find synonyms for: Noun1. synovia, synovial fluid, secretionusage: viscid lubricating fluid secreted by the membrane lining joints and tendon sheaths etc.WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language