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supercritical

/ˈsupərˌkrɪdəkəl/
IPA guide

Definitions of supercritical
  1. adjective
    (especially of fissionable material) able to sustain a chain reaction in such a manner that the rate of reaction increases
    synonyms:
    critical
    at or of a point at which a property or phenomenon suffers an abrupt change especially having enough mass to sustain a chain reaction
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