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Webster 1913 Edition

(rȧ-dĭk′ū̍-lẽr)

Adj.

Of or pertaining to roots, or the root of a plant.

radicular ‎(not comparable)

(medicine) Pertaining to a root or to a radicle; specifically, pertaining to the roots of the spinal nerves, or arteries which accompany nerve roots into the spinal cord.

pertaining to a root or to a radicle