Definition of Menstruation

1. Noun. The monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause. "The semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females"

Exact synonyms: Catamenia, Flow, Menses, Menstruum, Period
Generic synonyms: Discharge, Emission, Expelling
Specialized synonyms: Hypermenorrhea, Menorrhagia, Oligomenorrhea
Derivative terms: Catamenial, Flow, Menstruate

Definition of Menstruation

1. n. The discharge of the menses; also, the state or the period of menstruating.

Definition of Menstruation

1. Noun. The periodic discharging of the menses, the flow of blood and cells from the lining of the uterus in females of humans and other primates. ¹

¹ Source:

Definition of Menstruation

1. [n -S]

Medical Definition of Menstruation

1. The cyclic, physiologic discharge through the vagina of blood and mucosal tissues from the nonpregnant uterus, it is under hormonal control and normally recurs, usually at approximately four week intervals, in the absence of pregnancy during the reproductive period (puberty through menopause) of the female of the human and a few species of primates. It is the culmination of the menstrual cycle. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Menstruation Pictures

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Lexicographical Neighbors of Menstruation


Literary usage of Menstruation

Below you will find example usage of this term as found in modern and/or classical literature:

1. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1890)
"In the absence of a specific history the question as to how the amnion became infected is not readily answered. THE INFLUENCE OF menstruation UPON LACTATION ..."

2. Montaigne by Tetel, Marcel (1903)
"DISORDERS OF menstruation. STERILITY. menstruation. Physiology of menstruation. The agreement of a number of competent observers seems to have demonstrated ..."

3. Legal Medicine by Charles Meymott Tidy (1884)
"instance is recorded of vicarious menstruation from the breasts of a ... We have now to consider the connection between menstruation and childbearing. ..."

4. Diseases of Women by Harry Sturgeon Crossen (1922)
"menstruation is the regular periodic discharge of blood from the uterus, ... This definition, however, does not express all there is of menstruation. ..."

5. Obstetrics: a text-book for the use of students and practitioners by John Whitridge Williams (1904)
"The relation between menstruation and ovulation has given rise to a great deal of controversy, and while many interesting facts have been added to our ..."

6. A Text-book of physiology: For Medical Students and Physicians by William Henry Howell (1915)
"According to this view, menstruation is an indication that fertilization has not taken place.* This view falls in with the belief that ovulation normally ..."

7. Surgery, Gynecology & Obstetrics by The American College of Surgeons, Franklin H. Martin Memorial Foundation (1913)
"Immediate result: May 20, free menstruation with slight pain, never severe. ... Intense colicky pain immediately before and until menstruation begins. ..."

8. Anomalies and curiosities of medicine by George Milbry Gould, Walter Lytle Pyle (1901)
"Hence at one time menstruation was held in much awe and abhorrence. On the other hand, in some of the eastern countries menstruation was regarded as sacred, ..."

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