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megatonnage

[ meg-uh-tuhn-ij ]
/ ˈmɛg əˌtʌn ɪdʒ /
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noun
the destructive capacity of nuclear explosives as measured in megatons.
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Which of the following nouns has an irregular plural form?

Origin of megatonnage

1960–65; megaton + -age, after tonnage
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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