Definition of adactyl in English:

adactyl

Pronunciation /(ˌ)eɪˈdakt(ɪ)l/

adjective

rare Zoology

Origin

Early 19th century; earliest use found in George Shaw (1751–1813), natural historian. From French adactyle or its etymon post-classical Latin adactylus from a- + ancient Greek δάκτυλος finger, toe.