plu·​mule ˈplü-(ˌ)myül How to pronounce plumule (audio)
: the primary bud of a plant embryo usually situated at the apex of the hypocotyl and consisting of leaves and an epicotyl
: a down feather

Illustration of plumule

Illustration of plumule
  • 1 hypocotyl
  • 2 plumule
  • 3 cotyledons

Word History


New Latin plumula, from Latin, diminutive of pluma small soft feather — more at fleece

First Known Use

1727, in the meaning defined at sense 1

Time Traveler
The first known use of plumule was in 1727

Dictionary Entries Near plumule

Cite this Entry

“Plumule.” Dictionary, Merriam-Webster, Accessed 4 Feb. 2023.

Kids Definition


plu·​mule ˈplü-myü(ə)l How to pronounce plumule (audio)
: the shoot or bud of a plant embryo or seedling that is located between the cotyledons and grows into the stem and leaves
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