nomopelmous

Century Dictionary and Cyclopedia

1. In ornithology, having the normal or usual arrangement of the flexor tendons of the foot, the tendon of the flexor hallucis being entirely separate from that of the common flexor of the other toes. The arrangement is also called schizopelmous, and is contrasted with the sympelmous, antiopelmous, and heteropelmous ous dispositions of these tendons.

Wiktionary

1. adj. zoology, archaic, rare Having a separate and simple tendon to flex the first toe, or hallux.

GNU Webster's 1913

1. adj. (Zoöl.) Having a separate and simple tendon to flex the first toe, or hallux, as do passerine birds.