trimester
noun
ˈtrī-ˌme-
Did you know?
Semester, which comes from the Latin words for "six" and "month", has come to mean half an academic year when the year is divided into two segments. When an academic year is divided into three segments, each is called a trimester (which is usually a bit more accurate, since each segment often is close to three months in length). Some colleges operate on the "quarter" system, with the summer being the fourth quarter, but this just means that each quarter is basically a trimester. In a human pregnancy, a trimester is three months long, representing one-third of the nine months that a typical pregnancy lasts.
Examples of trimester in a Sentence
Allison Herries, Verywell Health, 21 Mar. 2025
Common times for announcements are after the first trimester, first midwife appointment or first ultrasound.
—Raja Krishnamoorthi, Newsweek, 13 Mar. 2025
Stunning stat: Of the roughly 35,000 pregnancies in Arkansas each year, about 10,000 aren't seen by a doctor until after the first trimester.
—Alex Golden, Axios, 7 Feb. 2025
My first trimester came with a lot of nausea and food aversions.
—Kayla Grant, People.com, 6 Feb. 2025
See All Example Sentences for trimester
Cite this Entry
“Trimester.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trimester. Accessed 9 Apr. 2025.
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trimester
noun
ˈtrī-ˌ
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