Hypertext Webster Gateway: "Quadrupling"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Quadruple \Quad"ru*ple\, v. t. [imp. & p. p. {Quadrupled}; p.
pr. & vb. n. {Quadrupling}.] [L. quadruplare: cf. F.
quadrupler.]
To multiply by four; to increase fourfold; to double; to
double twice. --A. Smith.
From WordNet (r) 1.7 (wn)
quadrupling
n : increase by a factor of four
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