monoamine oxidase monoamine neurotransmitter • monoamine oxidase inhibitor · · · Info · Definitions · Synonyms · Characters · · monoamine oxidase · · Text Common · · Latin · · Scripts 17 · · Length 6 · · Syllables Definitions · · · (noun) an enzyme that catalyzes the oxidation of many body compounds (e.g., epinephrine and norepinephrine and serotonin). Synonyms: monoamine oxidase, MAO. · · Noun Definition 1 Synonyms · · · mao · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 x latin small letter x U+0078