月げっ経けい前ぜん不ふ快かい気き分ぶん障しょう害がいalso: げっけいまえふかいきぶんしょうがいげっけいぜんふかいきぶんしょうがいMeanings1nounpremenstrual dysphoric disorder; PMDDmedicine›A medical term for a severe form of premenstrual syndrome. Used in clinical contexts.