Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun trimester

2 senses of trimester

Sense 1
trimester -- (a period of three months; especially one of the three three-month periods into which human pregnancy is divided)
       => time period, period of time, period -- (an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period")

Sense 2
trimester -- (one of three divisions of an academic year)
       => school term, academic term, academic session, session -- (the time during which a school holds classes; "they had to shorten the school term")