first trimester

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Definitions from WordNet

Noun first trimester has 1 sense

first trimester - time period extending from the first day of the last menstrual period through 12 weeks of gestation
--₁ is a kind of trimester

Definitions from the Web

First Trimester

Definition:

The first trimester refers to the initial three months of pregnancy, typically lasting from conception to around the 12th week.

Senses:

Medical: The period of pregnancy characterized by rapid development and major changes in the mother's body.

Usage:

In a medical context:

The first trimester is crucial for the formation of vital organs in the developing fetus.
During the first trimester, expectant mothers may experience morning sickness and fatigue.
Medical professionals closely monitor the progress of pregnancies during the first trimester.

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