Hypertext Webster Gateway: "Quintupling"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Quintuple \Quin"tu*ple\, v. t. [imp. & p. p. {Quintupled}; p.
pr. & vb. n. {Quintupling}.] [Cf. F. quintupler.]
To make fivefold, or five times as much or many.
From WordNet (r) 1.7 (wn)
quintupling
n : increasing by a factor of five
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