‖ prepenna Ornith.
(priːˈpɛnə)
Pl. -æ.
[mod.L., f. præ, pre- A. 2 + penna feather.]
A neossoptile or primitive feather of a bird.
| 1901 Ibis Apr. 343 In Apteryx the first definite feathers do not thrust out the prepennæ. |
‖ prepenna Ornith.
(priːˈpɛnə)
Pl. -æ.
[mod.L., f. præ, pre- A. 2 + penna feather.]
A neossoptile or primitive feather of a bird.
| 1901 Ibis Apr. 343 In Apteryx the first definite feathers do not thrust out the prepennæ. |
Oxford English Dictionary