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单词 plumule
释义 plu·mule
\ˈplü(ˌ)myül\ noun
(-s)
Etymology: New Latin plumula, from Latin, small soft feather, diminutive of pluma small soft feather — more at fleece
1. : the primary bud of a plant embryo usually situated at the apex of the hypocotyl and consisting of leaves and an epicotyl that elongates to extend the axis as a primary stem
2.
 a. : a down feather
 b. : androconium
[plumule of morning glory seedling: 1 hypocotyl, 2 plumule, 3 cotyledons]
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