mass deficiency


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Related to mass deficiency: mass defect
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Noun1.mass deficiency - the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particlesmass deficiency - the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles
mass - the property of a body that causes it to have weight in a gravitational field
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If a buried crater is filled by a lot of lava, it's likely to have a mass excess, and if it has more highlands material, a mass deficiency. Consider a large, complex impact crater with terraced walls and an uplifted central peak that formed on the original floor of a basin.