plumule(redirected from plumules)
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1. A down feather.
2. The young shoot of a plant embryo above the cotyledons, consisting of the epicotyl and often of immature leaves.
[Latin plūmula, diminutive of plūma, feather.]
plu′mu·lose′ (plo͞om′yə-lōs′) adj.
1. (Botany) the embryonic shoot of seed-bearing plants
2. (Zoology) a down feather of young birds that persists in some adults
[C18: from Late Latin plūmula a little feather]
1. the bud of the ascending axis of a plant while still in the embryo.
2. a down feather.
plu′mu•lar (-yə lər) adj.
The developing bud of a plant embryo, situated just below the cotyledons and often containing immature leaves. See more at germination.