propyl group propylene glycol • propylic · · · Info · Definitions · Synonyms · Characters · · propyl group · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) the monovalent organic group C3H7- obtained from propane. Synonyms: propyl, propyl group, propyl radical. · · Noun Definition 1 Synonyms · · · propyl · · Synonym 1 propyl radical · · Synonym 2 Characters · · space U+0020 g latin small letter g U+0067 l latin small letter l U+006C o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075 y latin small letter y U+0079