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mass defect
noun
, Physics.
- the amount by which the mass of an atomic nucleus differs from the sum of the masses of its constituent particles, being the mass equivalent of the energy released in the formation of the nucleus.
mass defect
noun
- physics the amount by which the mass of a particular nucleus is less than the total mass of its constituent particles See also binding energy
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Word History and Origins
Origin of mass defect1
First recorded in 1925–30
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