Breadcrumb Home > Thesaurus Cite Synonyms of syncytium Find synonyms for: Noun1. syncytium, cytoplasm, cytolusage: a mass of cytoplasm containing several nuclei and enclosed in a membrane but no internal cell boundaries (as in muscle fibers)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: syncytium (Dictionary) Related Content Daily Word Quiz: polemic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index