"You canker blossom!" 3 Shakespearean Insults


[trahy-mes-ter, trahy-mes-] /traɪˈmɛs tər, ˈtraɪ mɛs-/
a term or period of three months.
one of the three approximately equal terms into which the year is divided by some colleges, schools, etc.
Origin of trimester
1815-25; < French trimestre < Latin trimē(n)stris of three months, equivalent to tri- tri- + -mē(n)stris (see semester)
Related forms
[trahy-mes-truh l] /traɪˈmɛs trəl/ (Show IPA),
trimestrial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
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


a period of three months
(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
Cite This Source
Word Origin and History for trimester

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
Cite This Source
trimester in Medicine

trimester tri·mes·ter (trī-měs'tər, trī'měs'-)
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.
Cite This Source

Word of the Day

Difficulty index for trimester

Some English speakers likely know this word

Word Value for trimester

Scrabble Words With Friends

Nearby words for trimester