quin·tu·ple 
(kw
ĭn-t
p
əl, -ty
-, -t
ŭp
əl, kw
ĭn
t
ə-p
əl)
adj.1. Consisting of five parts or members.
2. Five times as much in size, strength, number, or amount.
n. A fivefold amount or number.
tr. & intr.v. quin·tu·pled,
quin·tu·pling,
quin·tu·ples To multiply or be multiplied by five.
[French, from Old French : Latin quīntus, fifth; see penkwe in the Appendix of Indo-European roots + -ple, -fold (from Latin -plus; see pel-2 in the Appendix of Indo-European roots).]
quin·tuply adv.