Definition of deformity noun from the Oxford Advanced Learner's Dictionary

 

deformity

 noun
noun
BrE BrE//ˈfɔːməti//
 
; NAmE NAmE//ˈfɔːrməti//
 
(pl. deformities)[countable, uncountable]
 
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a condition in which a part of the body is not the normal shape because of injury, illness or because it has grown wrongly synonym malformation Drugs taken during pregnancy may cause physical deformity in babies. The injury resulted in a deformity of the hip joint. Word Origin late Middle English: from Old French desformite, from Latin deformitas, from deformis ‘misshapen’.
See the Oxford Advanced American Dictionary entry: deformity