trimester | | |
n. (time) | 1. trimester | a period of three months; especially one of the three three-month periods into which human pregnancy is divided. |
| ~ period, period of time, time period | an amount of time.; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period" |
| ~ gestation, gestation period | the period during which an embryo develops (about 266 days in humans). |
| ~ first trimester | time period extending from the first day of the last menstrual period through 12 weeks of gestation. |
| ~ second trimester | time period extending from the 13th to the 27th week of gestation. |
| ~ third trimester | time period extending from the 28th week of gestation until delivery. |
n. (time) | 2. trimester | one of three divisions of an academic year. |
| ~ academic year, school year | the period of time each year when the school is open and people are studying. |
| ~ academic session, academic term, school term, session | the time during which a school holds classes.; "they had to shorten the school term" |
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