from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A systematic numerical reduction, especially of nuclear weapons, in which more than one weapon or warhead is destroyed for every new one that is built.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A systematic, gradual reduction in the number of something (especially nuclear weapons), normally by destroying more than are built
On the model of buildup.(American Heritage® Dictionary of the English Language, Fourth Edition)