first trimester
- noun
- /fɜrst traɪˈmɛstər/
- Specialized
- Many women experience morning sickness during their first trimester of pregnancy.
- first-trimester pregnancy
And my first trimester was pretty like by the books.
- And my first trimester was pretty like by the books.
- So I'm actually through my first trimester, yes.
- This one says sex in the first trimester.
- And, and so for much of what I study, the critical time is in the first trimester.
- So when a woman is pregnant, she produces more HCG, especially in the first trimester.
- Because in the first trimester, are you joking?
- So, so, so it's for us, it'll be early, first trimester.
Examples
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Maternal levels of hemoglobin and thyroid-stimulating hormone were analyzed in maternal serum extracted in the first trimester.
Academic text (2012) -
Diazepam carries an increased risk of congenital malformations when used during the first trimester.
Academic text (2003) -
And my first trimester was pretty like by the books.
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I am finally over my first trimester.
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It's meant to stop after the first trimester.
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In particular, the first trimester is a critical time.
Academic text (2012) -
OK so I'm very pregnant right now, still in the first trimester but the symptoms hit.
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Bleeding during pregnancy is common especially during the first trimester and usually no cause for alarm.
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ACOG recommends not doing exercise on your back after the first trimester of pregnancy.
Blog text (12) -
Travel in the first trimester or with a pre-existing obstetric condition is not recommended.
Academic text (2011)
How Early
- Specialized
- Specialized
- Specialized
Surface Forms
Morphology
The meaning is directly and transparently derived from combining 'first' (preceding in time) with 'trimester' (a three-month stage), so it clearly denotes the initial three-month period. This ordinal + period composition is a straightforward, cross-linguistically common pattern, making the phrase immediately comprehensible to a learner who knows both constituents.
Etymology
First trimester comes from the word trimester, which meant a 'three-month period'. So first trimester means the first three months of pregnancy, the early time when the baby begins to grow.