Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A down feather.
  • n. Botany The rudimentary terminal bud of a plant embryo situated at the end of the hypocotyl, consisting of the epicotyl and often of immature leaves.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The first bud, or gemmule, of a young plant; the bud, or growing point, of the embryo, above the cotyledons.
  • n. A down feather.
  • n. The aftershaft of a feather.
  • n. One of the featherlike scales of certain male butterflies.

from the GNU version of the Collaborative International Dictionary of English

  • n. The first bud, or gemmule, of a young plant; the bud, or growing point, of the embryo, above the cotyledons. See Illust. of radicle.
  • n.
  • n. A down feather.
  • n. The aftershaft of a feather. See Illust. under Feather.
  • n. One of the featherlike scales of certain male butterflies.

from The Century Dictionary and Cyclopedia

  • n. In ornithology, a down-feather; a feather of plumulaceous structure throughout.
  • n. In entomology: A little plume-like organ or ornament.
  • n. One of the peculiar obcordate scales found on the wings of certain lepidopterous insects, as Pieridæ.
  • n. The bud of the ascending axis of a plant while still in the embryo, situated at the apex of the caulicle (or radicle), above the base of the cotyledon or cotyledons, and inclosed by them when there are two or more.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. down feather of young birds; persists in some adult birds

Etymologies

Latin plūmula, diminutive of plūma, feather.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin plumula, diminutive of pluma "feather"; compare French plumule. (Wiktionary)

Examples

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  • the up of down

    August 25, 2009