critical mass

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critical mass

n.
1. The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level.
2. The total mass of matter needed to generate sufficient gravitational force to halt the current expansion of the universe.
3. An amount or level needed for a specific result or new action to occur: "[Plastic bags are] so nearly weightless that it's difficult to gather enough of a critical mass to make recycling them economically worthwhile" (Susan Freinkel).

critical mass

n
1. (Nuclear Physics) 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.

crit′ical mass′


n.
1. the amount of a given fissionable material necessary to sustain a chain reaction.
2. an amount necessary or sufficient to have a significant effect or to achieve a result.
[1940–45]

critical mass

The minimum amount of fissionable material capable of supporting a chain reaction under precisely specified conditions.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.critical mass - the minimum amount (of something) required to start or maintain a venture; "the battle for the computer market has now reached critical mass"; "there is now a critical mass of successful women to take the lead"; "they sold the business because it lacked critical mass"
amount - the relative magnitude of something with reference to a criterion; "an adequate amount of food for four people"
2.critical mass - the minimum mass of fissionable material that can sustain a chain reaction
mass - the property of a body that causes it to have weight in a gravitational field
Translations
masse critique

critical mass

n (Phys) → kritische Masse; (fig)Mindestanforderung f; to reach critical mass (fig)einen kritischen Punkt erreichen
References in periodicals archive ?
Tenders are invited for Project konrad - verification of the safety requirements of the konrad repository according to the state of science and technology (siko) - call for tenders to determine the verification requirements (phase 1): fault analysis, safety analysis of the operation and the subcriticality during the operational phase in konrad
Konrad - verification of the safety requirements of the konrad repository according to the state of science and technology (siko) - call for tenders to determine the verification requirements (phase 1): disturbance analyzes, safety analysis of the intended operation and assurances of subcriticality during the operational phase in konrad 10/18/17
Since the composition of analytic functions is analytic, by subcriticality of p(x, y) we get that the function p(z, t(z)) is analytic in D (for small enough [epsilon]).