| Radix 1. (n.) A root; a point of origin; a base; as in base ten numbers. 2. (n.) 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. 3. (n.) A finite expression, from which a series is derived. 4. (n.) The root of a plant. Thesaurus Entries beginning, bulb, bulbil, commencement, conception, corm, derivation, genesis, grass roots, head, inception, origin, original, origination, provenience, radical, radicle, rhizome, rise, root, rootstock, source, stem, stock, tap, taproot, tuber, tubercle | ![]() |