fluors, Courfes, Catamenia, in medicine, the monthly evacuations from the uterus of women not with child and not giving suck.

With regard to the causes of this evacuation, the best physiologists are entirely at a loss. It was long disputed whether the menstrual blood flowed from the uterus or vagina, but some observations of retroverted uteri have determined in favour of the former opinion.—For the disorders which follow a suppression, or too great a flow of the menses, see Medicine, n° 488, 259—264, and p. 4871.