- 1a 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
- 2 Drugs taken during pregnancy may cause physical deformity in babies. The injury resulted in a deformity of the hip joint.
NAmE//dɪˈfɔrmət̮i//(pl. deformities) [countable, uncountable]