The Collaborative International Dictionary
Semipalmated
Semipalmate \Sem`i*pal"mate\, Semipalmated \Sem`i*pal"ma*ted\, a. (Zo["o]l.) Having the anterior toes joined only part way down with a web; half-webbed; as, a semipalmate bird or foot. See Illust. k under Aves.
Wiktionary
semipalmated
a. Having webs between some, but not all, of the toes