trimester

[ trahy-mes-ter, trahy-mes- ]

noun

1. a term or period of three months.
2. one of the three approximately equal terms into which the year is divided by some colleges, schools, etc.

trimester

/ traɪˈmɛstə /

noun

1. a period of three months
2. (in some US and Canadian universities or schools) any of the three academic sessions

Derived Forms

• triˈmestral, adjective

Other Words From

• tri·mes·tral [trahy-, mes, -tr, uh, l], tri·mestri·al adjective

Word History and Origins

Origin of trimester¹

1815–25; < French trimestre < Latin trimē ( n ) stris of three months, equivalent to tri- tri- + -mē ( n ) stris ( semester )

Word History and Origins

Origin of trimester¹

C19: from French trimestre , from Latin trimēstris of three months, from tri- + mēnsis month

Example Sentences

She kept her pregnancy secret until her final trimester, publicly revealing her gorgeous bump while performing alongside the Migos at the 2021 BET Hip Hop Awards in July.

From Essence.com

The live components include weekly small pods, led mostly by clinicians, going into specific issues and concerns that mothers might be facing, such as postpartum care or trimester tips.

From TechCrunch

She was in her second trimester when she and her husband were given a grim prognosis.

From The Daily Beast

Physicians there are skilled enough to perform mid-trimester abortions, as well as procedures for women with fetal anomalies.

From The Daily Beast

As did their fetuses, including those of the four women who were in their last trimester.

From The Daily Beast

Each of these studies found that exposure to starvation during the first trimester of pregnancy appeared to do the most harm.

From The Daily Beast

In France, for example, abortion is available in the first trimester but heavily restricted after.

From The Daily Beast