/ Thesaurus / L Synonyms of long chain Find synonyms for: Noun1. long chain, long-chain molecule, chain, chemical chainusage: (chemistry) a relatively long chain of atoms in a moleculeAdjective1. long-chainusage: of molecules having relatively long chains of atoms in a moleculeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language