polydactyly

1. (medicine, teratology) A congenital condition in which a person or animal has more than the usual number of digits (fingers or toes) on at least one of the hands or feet.Examples: "2003, Karl-Heinz Grzeschik, 66: Greig Cephalopolysyndactyly Syndrome, Mary Ann McLaughlin (supervising editor), NORD Guide to Rare Disorders, National Organization for Rare Disorders, Wolters Kluwer (Lippincott Williams & Wilkins), page 201, Postaxial polydactyly is common in the hands and preaxial polydactyly in the feet."; "Pranamya Menaria (India; born August 10, 2005) has 25 in total (12 fingers and 13 toes). This is as a result of the condition Polydactyly and Syndactyly."; "The rare polydactylies, that is, not clearly only postaxial or only preaxial, are the most likely to be associated with an underlying syndrome."Synonyms: hyperdactyly, polydactylismcountableuncountable