Definitions
There is 1 meaning of the phrase
First Trimester.
First Trimester - as a noun
Time period extending from the first day of the last menstrual period through 12 weeks of gestation
Example Sentences
"During the first trimester of pregnancy, the baby's major organs begin to form."
"Many women experience morning sickness in the first trimester."
"The first trimester is a critical period for the development of the fetus."
"Prenatal vitamins are especially important in the first trimester."
"In the first trimester, a pregnant woman may feel more fatigued than usual."
