/ Thesaurus / T Synonyms of tumor virus Find synonyms for: Noun1. tumor virus, virususage: a cell-free filtrate held to be a virus responsible for a specific neoplasmWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language