polydactyly

or pol·y·dac·tyl·ism

[pol-ee-dak-tuh-lee]

Origin of polydactyly

First recorded in 1885–90; polydactyl + -y3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

polydactyly in Medicine

polydactyly

[pŏl′ē-dăktə-lē]
n.
  1. A condition characterized by the presence of more than five digits on a hand or foot.hyperdactyly
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.