Critical-mass
noun
1.
Physics. the amount of a given fissionable material necessary to sustain a chain reaction at a constant rate.
2.
an amount necessary or sufficient to have a significant effect or to achieve a result:
a critical mass of popular support.
noun
1.
the minimum mass of fissionable material that can sustain a nuclear chain reaction
2.
the minimum amount of money or number of people required to start or sustain an operation, business, process, etc: the critical mass for a subscription digital sports channel
critical mass
In physics, the amount of material that must be present before a chain reaction can sustain itself.
Note: The term critical mass is used to refer generally to the minimum amount of something needed to produce a given effect: “The town needs a critical mass of industry to attract more business.”
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