The Collaborative International Dictionary
Hexadactylous
Hexadactylous \Hex`a*dac"tyl*ous\, a. [Gr. ?; "e`x six + ? finger: cf. F. hexadactyle.] (Zo["o]l.) Having six fingers or toes.
Wiktionary
hexadactylous
a. (context zoology English) Having six fingers or toes.