D defs.my
Entry 1 sense Webster, 1913

Duple

· Du·ple · IPA /ˈdjuːpəl/
01 a. Double.
  1. 1.
    Double.
Phrases & compounds
Duple ratio — that in which the antecedent term is double the consequent, as of 2 to 1, 8 to 4, etc.