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Noun: PMS
  1. A syndrome that occurs in many women from 2 to 14 days before the onset of menstruation
    "She experienced mood swings due to PMS";
    - premenstrual syndrome, PMT [Brit]
Noun: P.M.
  1. The period between noon and midnight
    "AM to P.M.";
    - p.m., PM

Type of: period, period of time, syndrome, time period, time span

Encyclopedia: PMS