1 : a period of three or about three months especially : any of three periods of approximately three months each into which a human pregnancy

is divided. 2 : one of three terms into which the academic year is sometimes divided.

What is meant by trimester of pregnancy?

Trimester: In obstetrics, one of the three divisions of three months each during pregnancy, in which different phases of fetal development take place. The first trimester is a time of basic cell differentiation. The second trimester is a period of rapid growth and maturation of body systems.

What is an example of trimester?

Each three-month period of pregnancy, for example, is one trimester. A trimester is typically three months, including a trimester of human gestation (or the time pregnancy lasts), although sometimes it's a length of time divided into three equal parts.