Trimester

Definition

A trimester is a term used to describe a period of three months, typically utilized within the context of pregnancy to divide it into three stages. Each trimester signifies different phases of fetal development and maternal changes in the anatomy and physiology of pregnancy.

Related terms

Embryonic development: This refers to the early stages of fetal growth from conception to the end of the 8th week, where all major organs begin to develop.

Fetal development: This describes the process that occurs from the 9th week of pregnancy until birth, during which time significant growth and maturation of organs occur.

Gestation:

This is the period from conception to birth, during which an embryo or fetus develops in the uterus, typically lasting around 40 weeks in humans