supiˌnato-exˈtensor, a. Anat.
[f. supinato- (used as combining form of L. supīnātus supinated, in sense of supinator) + extensor.]
Applied to the mass of supinator and extensor muscles of the fore or hind limb, or their action.
| 1872 Humphry Myology 28 The muscles on the dorsal aspect of the leg and foot form a supinato-extensor mass. Ibid. 169 The fibres on the dorsal aspect, having a supinato-extensor action, take a similar direction. |