Ornithology (plural). The quill- or flight-feathers that grow upon the humerus in the wing of a bird.
| 单词 | θ38748 |
| 释义 | the world > animals > birds > parts of or bird defined by > [noun] > wing or wings > feather(s) on > tertiary or tertiaries (2) tertiary1834 Ornithology (plural). The quill- or flight-feathers that grow upon the humerus in the wing of a bird. tertial1836 A flight-feather of the third row; sometimes also applied to secondaries on the elbow-joint. See tertiary, n. 3. |
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