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megaton

[meg-uh-tuhn] /ˈmɛg əˌtʌn/
noun
1.
one million tons.
2.
an explosive force equal to that of one million tons of TNT, as that of atomic or hydrogen bombs.
Abbreviation: MT.
Origin
1950-1955
1950-55; mega- + ton1
Related forms
megatonic
[meg-uh-ton-ik] /ˌmɛg əˈtɒn ɪk/ (Show IPA),
adjective
multimegaton, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for multimegaton

megaton

/ˈmɛɡəˌtʌn/
noun
1.
one million tons
2.
an explosive power, esp of a nuclear weapon, equal to the power of one million tons of TNT mt
Derived Forms
megatonic (ˌmɛɡəˈtɒnɪk) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for multimegaton
megaton
1952, unit of explosive power equal to one million tons of TNT, from mega- (q.v.) + ton.
Online Etymology Dictionary, © 2010 Douglas Harper
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