Ill formation; irregular or anomalous formation; abnormal or wrong conformation or structure
A malformation in a person's body is a part which does not have the proper shape or form, especially when it has been like this since birth. babies with a high incidence of congenital malformations. = deformity. when a part of someone's body is badly formed = deformity
A structural defect of an organ, part of an organ, or a larger region of the body resulting from an intrinsically abnormal developmental process