[ si-mes-ter ]
/ sɪˈmɛs tər /
(in many educational institutions) a division constituting half of the regular academic year, lasting typically from 15 to 18 weeks.
(in German universities) a session, lasting about six months and including periods of recess.
Origin of semester
1820–30; < German < Latin sēmē(n)stris of six months duration < *sex-mēnstris, equivalent to sex six + mēns(is) month + -tris adj. suffix (perhaps representing an earlier *mens(i)-teros)
Related formsse·mes·tral, se·mes·tri·al [si-mes-tree-uh l] /sɪˈmɛs tri əl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for semestrial
/ (sɪˈmɛstə) /
(in some universities) either of two divisions of the academic year, ranging from 15 to 18 weeks
(in German universities) a session of six months
Derived Formssemestral, adjective
Word Origin for semester
C19: via German from Latin sēmestris half-yearly, from sex six + mensis a 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