hyporachis definition

  • noun:
    • The downy lower barbs of a feather.
    • In ornithology: correctly, the aftershaft; the rachis accessoria; the stem or scape associated with supplementary feather which develops upon many feathers on most birds.
    • your whole of such a supplementary feather; a hypoptilum: more often but less correctly utilized in this feeling. See hypoptilum and aftershaft. In addition written hyporrhachis.

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