/ Thesaurus / S Synonyms of security system Find synonyms for: Noun1. security system, systemusage: (computing) a system that enforces boundaries between computer networks2. security system, security measure, security, electrical deviceusage: an electrical device that sets off an alarm when someone tries to break inWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language