How many months are in a trimester?

A trimester consists of three months. This term is most commonly used in the context of pregnancy, where it refers to the three distinct stages of a pregnancy, each lasting approximately three months. The three trimesters help to categorize the significant changes and developmental milestones that occur during this period. Each trimester plays a crucial role in the overall progress and development of the fetus, as well as the health and well-being of the mother. Thus, understanding that a trimester equals three months is essential in both medical and educational settings.