Definition of propatagial in US English:

propatagial

adjective

Zoology
  • Of or relating to a propatagium; especially designating or relating to certain muscles and tendons in the front edge of the wing or gliding membrane.

Origin

Late 19th century; earliest use found in Science. From propatagium + -al, after scientific Latin propatagialis (M. Fürbringer, 1885 or earlier).