polydactyly
nounUK /ˌpɒl.ɪˈdak.tɪl.i/ · US /ˌpɑl.iˈdæk.təl.i/
Etymology From Ancient Greek πολυδάκτυλος (poludáktulos) + -y, from πολυ- (polu-, “many”) + δάκτυλος (dáktulos, “digits”), equivalent to poly- + dactyly or polydactyl + -y.^((Etymology 3))
1
Medicine, Sciences, 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.
- 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.2008, “Most Fingers and Toes — Living Person”, in Guinness World Records, Human Body — Extreme Bodies:
2 more examples
- The rare polydactylies, that is, not clearly only postaxial or only preaxial, are the most likely to be associated with an underlying syndrome.2021, Leah W. Burke, “3: Genetics of Associated Syndromes”, in Donald R. Laub Jr., editor, Congenital Anomalies of the Upper Extremity, Springer, page 42:
- Polydactyly with a triphalangeal thumb will be described in the chapter on the triphalangeal thumb.[…]The incidence of polydactyly depends on the population studied and the definition used. Region, ethnicity and combined numbers of all polydactylies, or only radial or ulnar-sided polydactyly, provide very different incidences in published series.2023, Christianne van Nieuwenhoven, Steven Hovius, “9: Thumb Polydactyly”, in Giorgio Pajardi, editor, Pediatric Hand Surgery, Springer, page 102:
- Synonyms
- hyperdactyly, polydactylism
- Derived terms
- nonpolydactyly, postaxial polydactyly, preaxial polydactyly, short rib-polydactyly syndrome, synpolydactyly
- Related terms
- cephalopolysyndactyly, ectrodactyly, polydactyl, polydactylous, polysyndactyly, syndactyly, multidigitate, polydigital
- Hyponyms
- hexadactyly