D defs.my
Entry 1 sense Webster, 1913

Subduplicate

· Sub·du·pli·cate · IPA
01 a. Expressed by the square root; -- said of ratios.
  1. 1.
    Expressed by the square root; -- said of ratios.(Math.)
Phrases & compounds
Subduplicate ratio — the ratio of the square roots, or the square root of a ratio; thus, the subduplicate ratio of a to b is √a to √b, or a/b.