Quintuple \Quin"tu*ple\, a. [L. quintus fifth: cf. F. quintuple, L. quintuplex. Cf. Quadruple.]

Multiplied by five; increased to five times the amount; fivefold.

Quintuple time (Mus.), a time having five beats in a measure. It is seldom used.

Source: Webster's Revised Unabridged Dictionary (1913)
 

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.

Source: Webster's Revised Unabridged Dictionary (1913)