monoamine oxidase inhibitor monoamine oxidase • monoamino · · · Info · Definitions · Synonyms · Characters · · monoamine oxidase inhibitor · · Text Common · · Latin · · Scripts 27 · · Length 10 · · Syllables Definitions · · · (noun) any of a group of antidepressant drugs that inhibit the action of monoamine oxidase in the brain and so allow monoamines to accumulate. Synonyms: monoamine oxidase inhibitor, MAOI. · · Noun Definition 1 Synonyms · · · maoi · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 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 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 x latin small letter x U+0078