Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
the explosive force of one thousand tons of TNT: a unit for measuring the power of thermonuclear weapons: abbrev. kT
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun Abbr. kt
- A unit of weight or capacity equal to 1,000 metric tons.
- An explosive force equivalent to that of 1,000 metric tons of TNT.