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
Sharon Udasin, The Hill, 23 June 2025
Hormonal changes are responsible for triggering things like nausea and dizziness, including that pesky morning sickness, particularly in the first trimester.
—Rachel Nall, SELF, 17 June 2025
Singer Expecting Baby No. 2 with Husband Jeff Grossman: 'So Overjoyed' (Exclusive)
Van Dale says that the beginning of this pregnancy went similarly to her first with son Dimitri, but in the second trimester, things became very different.
—Angela Andaloro, People.com, 11 June 2025
The 38-year-old Cassie — who is in the third trimester of pregnancy with her third child — has been composed on the witness stand.
—Michael R. Sisak, Los Angeles Times, 15 May 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 20 Jul. 2025.
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trimester
noun
ˈtrī-ˌ
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