macropodia

from The Century Dictionary.

• noun A genus of spider-crabs or sea-spiders founded by W. E. Leach in 1813 upon the common British species formerly known as Cancer phalangium, and made the type of a family Macropodiadæ. Stenorhynchus of Latreille is a synonym.
• noun The condition of having abnormally large feet.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun medicine Excessive development of the feet