/ Thesaurus / W Synonyms of w.m.d. Find synonyms for: Noun1. weapon of mass destruction, WMD, W.M.D., weapon, arm, weapon systemusage: a weapon that kills or injures civilian as well as military personnel (nuclear and chemical and biological weapons)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language