radicle

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve)

Borrowed from Latin rādīcula, from rādīc- (“root”) + -ula (“diminutive”). Doublet of radicula and radicel.

But what is that force which divides and subdivides the branches of a tree into smaller boughs and its roots into radicles? — Laughter: An Essay on the Meaning of the Comic, Henri Bergson
The soil, it appears, is suited to the seed, for it has sent its radicle downward, and it may now send its shoot upward also with confidence. — Walden, and On The Duty Of Civil Disobedience, Henry David Thoreau

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