methylene methyldopa • Methylene azure · · · Info · Definitions · Synonyms · Characters · · methylene · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) the bivalent radical CH2 derived from methane. Synonyms: methylene group, methylene radical. · · Noun Definition 1 Synonyms · · · methylene group · · Synonym 1 methylene radical · · Synonym 2 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E t latin small letter t U+0074 y latin small letter y U+0079