trimester

/ˈtr(a)ɪ.mɛs.tə(r)//ˈt(ʃ)raɪ.mɛs.tər/

中文释义来自 ECDICT

From French trimestre, from Latin trimestris (“of three months”), from trēs (“three”) + mensis (“month”).

1A period of three months or about three months; (financial): quarter.
2One of the terms of an academic year in those learning institutions that divide their teaching in three roughly equal terms, each about three months long. Compare semester.