menstruation
UK[ˌmenstruˈeɪʃn]US[ˌmenstruˈeɪʃn]
n
The process in a woman or female animal of discharging blood and other material from the lining of the uterus at intervals of about one month from puberty until menopause, except during pregnancy.
Morpheme Breakdown
menstru
ation
menstru
month
ation
noun suffix
Etymology
The word menstruation is built upon the Latin concept of monthly cycles. Its core root, menstru-, derives directly from Latin menstruus meaning "monthly," which itself originates from mensis (month). This Latin term is traced back to the Proto-Indo-European root meh₁- (to measure), reflecting the ancient observation of the moon's phases as a primary measure of time. The suffix -ation was later appended to form a noun describing the specific physiological process. Thus, the term's literal logic is "the process of the monthly cycle," directly linking the regularity of the event to a fundamental unit of measured time.
Analysis
Structure: menstru (month) + ation (noun suffix)
- menstru: From Latin menstruus (monthly), from mensis (month). Functions as the core root indicating a monthly cycle.
- ation: A suffix of Latin origin (-ationem) forming nouns denoting an action or process.
Examples
The onset of menstruation typically occurs during puberty.
Some women experience cramps and other discomfort during menstruation.
The average cycle of menstruation is about 28 days.