1. Consisting of ten parts or members.
2. Ten times as much in size, strength, number, or amount.
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.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.