Trip″li‐cate (?), a. [L. triplicatus, p. p. of triplicare to triple, treble; tri- (see Tri-) + plicare to fold. See Ply, v. t.] Made thrice as much; threefold; tripled.
Triplicate ratio(Math.), the ratio of the cubes of two quantities; thus, the triplicate ratio of a to b is a3: b3.