Wiktionary
polydactylous
a. Having more that the normal number of digits; e.g. a '''polydactylous''' cat may have six or more toes on its paw. alt. Having more that the normal number of digits; e.g. a '''polydactylous''' cat may have six or more toes on its paw.
WordNet
polydactylous
adj. of or relating to a person (or other vertebrate) having more than the normal number of digits [syn: polydactyl]