Syndactyly of several fingers or toes. There are several forms: a simple one [MIM*174700] and one with abnormal skull shape, Grieg cephalopolysyndactyly syndrome [MIM*175700], both inherited as an autosomal dominant trait; a recessive form is associated with cardiac defects [MIM*263630].
* * *
poly·syn·dac·ty·ly (pol″e-sin-dakґtə-le) [poly- + syndactyly] association of polydactyly and syndactyly of varying degrees of the hand and foot.Medical dictionary. 2011.