n.
Pronunciation: ˌ d ē - ˌ fo ̇ r- ' m ā -sh ə n, ˌ de-f ə r-
Function: noun
Date: 15th century
1 : alteration of form or shape also : the product of such alteration
2 : the action of deforming : the state of being deformed
3 : change for the worse
– de · for · ma · tion · al \ -sh ə -n ə l \ adjective