radicle

noun

1. Botany.
   1. the lower part of the axis of an embryo; the primary root.
   2. a rudimentary root; radicel or rootlet.
2. Chemistry. (formerly) radical(def 13).
3. Anatomy. a small rootlike part or structure, as the beginning of a nerve or vein.

noun

1. botany
   1. part of the embryo of seed-bearing plants that develops into the main root
   2. a very small root or rootlike part
2. anatomy any bodily structure resembling a rootlet, esp one of the smallest branches of a vein or nerve
3. chem a variant spelling of radical (def. 11)

n.

1670s, in botany, from Latin radicula, diminutive of radix (see radish).

n.

1. A small structure, such as a fibril of a nerve, that resembles a root.

1. The part of a plant embryo that develops into a root. In most seeds, the radicle is the first structure to emerge on germination.
2. A small anatomical structure, such as a fibril of a nerve, that resembles a root.