n.
A unit of explosive force equal to that of one billion (109) tons of TNT.
gigaton
Dictionary:
gig·a·ton (gĭg'ə-tŭn', jĭg'-)  |
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 | Dictionary. 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. Read more |
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