trimester
noun
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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
Julia Daye, Miami Herald, 18 Apr. 2024
The American College of Obstetricians and Gynecologists recommends pregnant mothers get vaccinated with Tdap during their third trimester, which the CDC says prevents around 78% of pertussis cases and 90% of pertussis hospitalizations in babies younger than 2 months.
—Kaitlin Sullivan, NBC News, 17 Apr. 2024
Trisomy 18 can be diagnosed by a blood test toward the end of the first trimester.
—Gina Kolata Kim Raff, New York Times, 28 Mar. 2024
Mothers in their third trimester of pregnancy should also get vaccinated to avoid contracting pertussis and spreading it to their newborn.
—Keri Brenner, The Mercury News, 26 Mar. 2024
Although outcomes for the surviving twin are generally good, particularly if the loss of the vanishing twin occurs in the first trimester, little research has been done involving the mental-health effects of VTS on the birth parents or the surviving sibling.
—TIME, 6 Feb. 2024
Next is Virginia, where it is allowed prior to the third trimester.
—Lauren Mascarenhas, CNN, 6 Apr. 2024
Some healthcare providers may advise avoiding all drugs—whether OTC or prescription—during the first trimester.
—Amanda Gardner, Health, 30 Mar. 2024
The first trimester is the time for cleaning up your financial act, says Jean Chatzky, financial editor of NBC Today.
—Becky Batcha and Hiranmayi Srinivasan, Parents, 29 Mar. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'trimester.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Trimester.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trimester. Accessed 25 Apr. 2024.
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trimester
noun
ˈtrī-ˌ
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