menstrual cycle

/ mĕn′stro̅o̅-əl /

1. The recurring monthly series of physiological changes in women and other female primates in which an egg is produced in the process known as ovulation, and the uterine lining thickens to allow for implantation if fertilization occurs. If the egg is not fertilized, the lining of the uterus breaks down and is discharged during menstruation.
2. See also ovulation

menstrual cycle

1. The periodic series of changes in the female reproductive system associated with the preparation of the uterus for pregnancy; the cycle is repeated roughly every twenty-eight days. During the menstrual cycle, an ovum is released from one of the ovaries (the release is called ovulation ), and the uterus develops an inner lining enriched with blood to prepare it for the possible implantation of a zygote . If fertilization and implantation do not take place, the lining of the uterus is discharged during menstruation .

Example Sentences

Episodes of acne can be hereditary and also occur as a result of hormonal changes during the menstrual cycle or pregnancy.

From BBC

It carries nutrients to cells and is crucial for hormonal balance, which can affect blood pressure and the menstrual cycle.

From Los Angeles Times

For two weeks out of her menstrual cycle, she would experience extreme fatigue, depression and feelings of hopelessness, like nothing is ever going to get better.

From BBC

These kinds of extreme symptoms started a week before her period when she was in what's known as the luteal phase of her menstrual cycle and for years she had believed it was completely normal.

From BBC

JD Vance’s controversial commentary about “childless cat ladies” and assisted fertility might just be bested by his own congressional voting record — which includes … wait for it … enabling menstrual cycle surveillance by state law enforcement agencies.

From Los Angeles Times