Meaning & use
trimester
A period of about three months, especially one of three divisions of pregnancy or an academic year.
See it in a sentence
Doctors monitor different developments in each trimester of a pregnancy.
The university divides its academic year into three trimesters instead of two semesters.
A note on using this word
Trimester systems divide the year into three roughly equal terms, unlike semester systems, which use two.
Words with a similar meaning
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