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catamenia

catamenia, n. pl. Phys.
  (kætəˈmiːnɪə)
  [Gr. καταµήνια menses, properly neut. pl. of καταµήνιος monthly, f. µήν month.]
  The menstrual discharge.

1754–64 Smellie Midwif. I. 107 If the Catamenia do not flow at the stated time the patient is soon after seized with the Chlorosis. 1845 G. E. Day Simon's Anim. Chem. I. 271 A woman labouring under suppression of the catamenia.

Oxford English Dictionary

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