1. [ noun ] (biology,chemistry,biochemistry) an enzyme that catalyzes the oxidation of many body compounds (e.g., epinephrine and norepinephrine and serotonin)
Synonyms: monoamine_oxidase
Related terms: enzyme
2. [ noun ] Woman's first name, popularity rank in the U.S. is 3550
3. [ noun ] Last name, frequency rank in the U.S. is 15422
4. [ noun ] (Chinese,politics) Chinese communist leader (1893-1976)
Synonyms: Mao_Tsetung Mao_Zedong
Related terms: communist revolutionist
Similar spelling:   Mayo