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trimester

 
Noun trimester has 2 senses
  1. trimester - a period of three months; especially one of the three three-month periods into which human pregnancy is divided
    --1 is a kind of
    time period, period of time, period
    --1 is a part of gestation, gestation period
    --1 has particulars: first trimester; second trimester; third trimester
  2. trimester - one of three divisions of an academic year
    --2 is a kind of
    school term, academic term, academic session, session
    --2 is a part of school year, academic year
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