fissipalmate

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Having lobed or partially webbed separated toes, as in the feet of certain birds.

from The Century Dictionary.

• Semipalmate; palmiped with deeply incised webs; partly fissiped.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Zoöl.) Semipalmate and loboped, as a grebe's foot. See Illust. under aves.