impennate, a. and n. Ornith.
(ɪmˈpɛnət)
[f. im-2 + pennate, after mod.L. Impenn-es.]
A. adj. Featherless, wingless; spec. applied to the Impennes, a name given by Illiger, 1811, to certain swimming birds which have small wings covered with scale-like feathers, as the penguins. B. n. A bird of this kind.
| 1842 Brande Dict. Sci. etc., Impennates, Impennes. |