Definition of radicle
1
: the lower part of the axis of a plant embryo or seedling:
a
: the root of a plant embryo
b
: hypocotyl
c
: the hypocotyl and the root together
2
: radical sense 4
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Merriam-Webster unabridged
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Time Traveler for radicle
The first known use of radicle was in 1671
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