propene propendent • propenoic · · · Info · Definitions · Synonyms · Characters · · propene · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a flammable gas obtained by cracking petroleum; used in organic synthesis. Synonyms: propylene. · · Noun Definition 1 Synonyms · · · propylene · · Synonym 1 Characters · · e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072