Noun: polydactyly
- Birth defect characterized by the presence of more than the normal number of fingers or toes
"The genetic counsellor explained that polydactyly can run in families";
- hyperdactyly
Derived forms: polydactylies
Type of: birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disease, congenital disorder
Encyclopedia: Polydactyly