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trimester

noun [C]
 
 
/trɪˈmes.tər/ /traɪ-/ US  /traɪˈmes.tɚ/

Definition

a three-month periodSpecific periods of time any of the three three-month periods that a human pregnancy is divided into: The second trimester is generally the easiest part of a pregnancy.PregnancyBirthSpecific periods of time US any of the three-month periods into which the school or college year is sometimes divided: Many students arrange internships or work-study placements during the second trimester. → Compare semesterUniversity and college educationSchools in general
(Definition of trimester noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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