/ Thesaurus / C Synonyms of chemical chain Find synonyms for: Noun1. chain, chemical chain, unit, building blockusage: (chemistry) a series of linked atoms (generally in an organic molecule)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language