**Ra"dix** (?), n.; pl. Radices (#), E. Radixes (#). [L. *radix*, *-icis*, root. See Radish.]

**1.** Philol.

A primitive, from which spring other words; a radical; a root; an etymon.

**2.** Math. (a)

A number or quantity which is arbitrarily made the fundamental number of any system; a base. Thus, 10 is the **radix**, or base, of the common system of logarithms, and also of the decimal system of numeration.

(b) Alg.

A finite expression, from which a series is derived.

[R.]

*Hutton.*

**3.** Bot.

The root of a plant.

© Webster 1913.