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trimester

[trahy-mes-ter, trahy-mes-] /traɪˈmɛs tər, ˈtraɪ mɛs-/
noun
1.
a term or period of three months.
2.
one of the three approximately equal terms into which the year is divided by some colleges, schools, etc.
Origin
1815-1825
1815-25; < French trimestre < Latin trimē(n)stris of three months, equivalent to tri- tri- + -mē(n)stris (see semester)
Related forms
trimestral
[trahy-mes-truh l] /traɪˈmɛs trəl/ (Show IPA),
trimestrial, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for trimester
  • Cutting-edge technology makes it possible for us to explore each trimester in amazing new detail.
  • The center's trimester schedule means students move through the program quickly.
  • During the third trimester or summer students may opt for an exchange placement.
  • Actually, her mom was pregnant in the second trimester when the disaster happened.
  • Full-time students normally take four courses per trimester and part-time students take two.
  • During first trimester of aggressive medication and treatment, patient showed no change.
  • Once you have reached your third trimester of pregnancy, you are advised to avoid travel unless it is absolutely necessary.
  • So welcome to a trimester's worth of pre-gestational fretting.
  • During the first trimester your body undergoes many changes.
  • The drug metronidazole, commonly used to treat intestinal parasites, is best avoided in the first trimester.
British Dictionary definitions for trimester

trimester

/traɪˈmɛstə/
noun
1.
a period of three months
2.
(in some US and Canadian universities or schools) any of the three academic sessions
Derived Forms
trimestral, trimestrial, adjective
Word Origin
C19: from French trimestre, from Latin trimēstris of three months, from tri- + mēnsis month
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for trimester
n.

1821, "period of three months," from French trimestre (early 17c.), from Latin trimestris "of three months," from tri- "three" (see tri-) + mensis "month" (see moon (n.)). Specific obstetrics sense is attested from 1916.

Online Etymology Dictionary, © 2010 Douglas Harper
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trimester in Medicine

trimester tri·mes·ter (trī-měs'tər, trī'měs'-)
n.
A period of three months.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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