men·stru·ateBrE/ˈmenstrueɪt/NAmE/ˈmenstrueɪt/verbpresent simple - I / you / we / theymenstruateBrE/ˈmenstrueɪt/NAmE/ˈmenstrueɪt/present simple - he / she / itmenstruatesBrE/ˈmenstrueɪts/NAmE/ˈmenstrueɪts/past simplemenstruatedBrE/ˈmenstrueɪtɪd/NAmE/ˈmenstrueɪtɪd/past participlemenstruatedBrE/ˈmenstrueɪtɪd/NAmE/ˈmenstrueɪtɪd/ -ing formmenstruatingBrE/ˈmenstrueɪtɪŋ/NAmE/ˈmenstrueɪtɪŋ/[I] (formal) whenawomanmenstruates, thereisaflowofbloodfromherwomb, usuallyonceamonth行经；来月经