long chain long-celled • long-chain · · · Info · Definitions · Synonyms · Characters · · long chain · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) (chemistry) a relatively long chain of atoms in a molecule. Synonyms: long chain, long-chain molecule. · · Noun Definition 1 (adj) of molecules having relatively long chains of atoms in a molecule. Synonyms: long-chain. · · Adjective Definition 1 Synonyms · · · long-chain molecule · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F