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Noun: PMS
  1. A syndrome that occurs in many women from 2 to 14 days before the onset of menstruation
    - premenstrual syndrome, PMT [Brit]
Noun: Pm
  1. A soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium
    - promethium, atomic number 61

Type of: metal, metallic element, syndrome

Encyclopedia: PMS