[ uh-pawr-shuh n, uh-pohr- ]
/ əˈpɔr ʃən, əˈpoʊr- /

verb (used with object)

to distribute or allocate proportionally; divide and assign according to some rule of proportional distribution: to apportion expenses among the three men.

Nearby words

  1. appointment viewing,
  2. appointor,
  3. appomattox,
  4. appomattox court house,
  5. apport,
  6. apportionment,
  7. apposable,
  8. appose,
  9. apposite,
  10. appositely

Origin of apportion

1565–75; < Middle French apportionner, equivalent to ap- ap-1 + portionner to portion

Related formsap·por·tion·a·ble, adjectiveap·por·tion·er, nounnon·ap·por·tion·a·ble, adjectiveun·ap·por·tioned, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for apportion

British Dictionary definitions for apportion


/ (əˈpɔːʃən) /


(tr) to divide, distribute, or assign appropriate shares of; allot proportionallyto apportion the blame
Derived Formsapportionable, adjectiveapportioner, noun

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

Word Origin and History for apportion



1570s, from Middle French apportionner, from Old French aporcioner "apportion, share out," from a- "to" (see ad-) + portioner "to divide into portions," from portion "share, portion" (see portion). Related: Apportioned; apportioning.

Online Etymology Dictionary, © 2010 Douglas Harper