Trimester

/traɪˈmɛstər/

Meaning & Definition

noun

a period of three months, especially as a division of the academic year or in pregnancy.

The first trimester of the academic year begins in September.

a division of a pregnancy that lasts about three months.

She is in her second trimester and feeling much better.

one of three periods of equal length into which a school or university year is divided.

Students must complete their assignments by the end of the trimester.

From Latin 'trimester', from 'tri-' meaning 'three' and 'mensis' meaning 'month'.

first trimester

The initial three months of a pregnancy.

second trimester

The middle three months of a pregnancy.

third trimester

The final three months of a pregnancy.

semester

A half-year term in schools, typically lasting about six months.

quarter

One of four equal parts of a year, typically used in academic settings.

A reference to pregnancy.

She's in her third tri, ready to pop!

A casual way to refer to an academic period.

I'm so glad this tri is almost over!