National Cancer Institute
U.S. National Institutes of Health | www.cancer.gov
In English | En español
NCI Home
Cancer Topics
Clinical Trials
Cancer Statistics
Research & Funding
News
About NCI
Dictionary of Cancer Terms
In English   En español
Page Options
Print This Page
More NCI Dictionaries
NCI Drug Dictionary

Glossary of Statistical Terms

NCI Dictionary of Genetics Terms

Terminology Resources
Quit Smoking Today
Search for
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
In English   En español

menstrual period (MEN-stroo-al PEER-ee-od)

 The periodic discharge of blood and tissue from the uterus. From puberty until menopause, menstruation occurs about every 28 days, but does not occur during pregnancy.



Previous Definitions:meningitis, menopausal hormone therapy, menopause, menorrhagia, menstrual cycle
Next Definitions:menstruation, mental health, mental health counselor, meperidine hydrochloride, mercaptopurine

A Service of the National Cancer Institute
Department of Health and Human Services National Institutes of Health USA.gov