1. The cardinal number equal to 10³³.
2. Chiefly British. The cardinal number equal to 10⁶⁰.

[Latin decem, ten; see deci- + (M)ILLION.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.