Enter a clue or pattern or both:
The Clue
Rudimentary roots (7 letter answer)
The Answer
RADICES
Tags
Notes
The answer RADICES is so rare that it appears less than once every 2500 puzzles.
Definition
RADIX as a noun:
1. (base, radix) = (numeration system) the positive integer that is equivalent to one in the next higher counting place; "10 is the radix of the decimal system"