- Botany. the bud of the ascending axis of a plant while still in the embryo.
- Ornithology. a down feather.
Origin of plumule
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for plumule
Same, older, with plumule developed into internode and pair of leaves.
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.Outlines of Lessons in Botany, Part I; From Seed to Leaf
Jane H. Newell
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
- the embryonic shoot of seed-bearing plants
- a down feather of young birds that persists in some adults
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
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.