radices
Webster's Dictionary (GCIDE)
Radix \Ra"dix\ (r[=a]"d[i^]ks), n.; pl. L. Radices (r[a^]d"[i^]*s[=e]z), E. Radixes (r[=a]"d[i^]ks*[e^]z). [L. radix, -icis, root. See Radish.]
1.(Philol.) A primitive word, from which spring other words; a radical; a root; an etymon. [1913 Webster]
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. [1913 Webster]
3.(Bot.) The root of a plant. [1913 Webster]