D defs.my
Entry 3 senses Webster, 1913

Radix

/(rā"dĭks)/ · Ra·dix · IPA /ˈɹeɪ.dɪks/
01 n. A primitive word, from which spring other words; a radical; a root; an etymon.
pl. Radices, Radixes ((răd"ĭ*sēz))
  1. 1.
    A primitive word, from which spring other words; a radical; a root; an etymon.(Philol.)
  2. 2.
    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.(Math.) [R.]
  3. 3.
    The root of a plant.(Bot.)