[noun] [U] - UK abbreviation for premenstrual tension (= feelings of anxiety that some women experience in the days before their monthly flow of blood from the vagina when they are not pregnant)You'll have to excuse her bad mood - she's suffering from PMT. PMT is one of the symptoms of PMS.
PMT
Meaning of PMT in English
Cambridge English vocab. Кембриджский английский словарь. 2012