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Definition of Polydactyly

Polydactyly: More than the normal number of fingers or toes. From the Greek "polys" (many) + "dactylos" (finger) = many fingers or, medically, too many fingers. Polydactyly is the opposite of oligodactyly (too few fingers or toes).

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=4984
Last Editorial Review: 8/28/2013

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