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In nuclear engineering, a critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The critical mass of a fissionable material depends upon its nuclear properties (specifically, its nuclear fission cross-section), density, shape, enrichment, purity, temperature, and
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The meaning of CRITICAL MASS is a size, number, or amount large enough to produce a particular result. How to use critical mass in a sentence.
Critical mass, in nuclear physics, the minimum amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated conditions.
- The Editors of Encyclopaedia Britannica
the size or number that something needs to reach before a particular change or development can happen: They believe that they have achieved critical mass, that is a size that is necessary for the company to survive. The challenge is to attract a critical mass of customers that will enable the business to start making a profit.
the size or number that something needs to reach before a particular change or development can happen: They believe that they have achieved critical mass, that is a size that is necessary for the company to survive. The challenge is to attract a critical mass of customers that will enable the business to start making a profit.
CRITICAL MASS meaning: 1 : an amount of material (such as plutonium) that is large enough to allow a nuclear reaction to occur; 2 : the size, number, or amount of something that is needed to cause a particular result.
