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See more synonyms for plumule on Thesaurus.com
  1. Botany. the bud of the ascending axis of a plant while still in the embryo.
  2. Ornithology. a down feather.
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Origin of plumule

1720–30; < New Latin, Latin plūmula. See plume, -ule
Related formsplu·mu·lar [ploom-yuh-ler] /ˈplum yə lər/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for plumule

Historical Examples

  • Same, older, with plumule developed into internode and pair of leaves.

    The Elements of Botany

    Asa Gray

  • So it is the stem-portion of the plumule which is at first conspicuous and strong-growing.

  • They may also be divided into those with and without the plumule.

  • It is important that the leaves on the primary axis arising from the plumule are examined.

  • It consists of one or more seed-leaves or cotyledons, a radicle or young root, and a plumule or young bud.

    Field and Woodland Plants

    William S. Furneaux

British Dictionary definitions for plumule


  1. the embryonic shoot of seed-bearing plants
  2. a down feather of young birds that persists in some adults
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Word Origin

C18: from Late Latin plūmula a little feather
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

plumule in Science


  1. The young shoot of a plant embryo, situated above the cotyledons and consisting of the epicotyl and often of immature leaves. See more at germination.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.