dec·u·ple 
(dĕkyə-pəl)
(dĕkyə-pəl)adj.
1. Consisting of ten parts or members.
2. Ten times as much in size, strength, number, or amount.
n.
A tenfold amount or number.
intr. & tr.v. dec·u·pled, dec·u·pling, dec·u·ples
To multiply or be multiplied by ten.
[Middle English, from Old French, from Late Latin decuplus : Latin decem, ten; see dek in the Appendix of Indo-European roots + Latin -plus, -fold; see pel-2 in the Appendix of Indo-European roots.]
de·cuply adv.