[ awl-tuh-rey-shuh n ]
/ ˌɔl təˈreɪ ʃən /


the act or process of altering; the state of being altered: Alteration will improve the dress.
a change; modification or adjustment: There has been an alteration in our plans.

Origin of alteration

1350–1400; Middle English alteracioun < Medieval Latin alterātiōn- (stem of alterātiō). See alter, -ation

Related forms

pre·al·ter·a·tion, nounpro·al·ter·a·tion, adjectivere·al·ter·a·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for alteration

British Dictionary definitions for alteration


/ (ˌɔːltəˈreɪʃən) /


an adjustment, change, or modification
the act of altering or state of being altered

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