Supercritical
[soo-per-krit-i-kuh l] /ˌsu pərˈkrɪt ɪ kəl/
adjective
1.
extremely critical.
2.
Physics. pertaining to a mass of radioactive material in which the rate of a chain reaction increases with time.
supercritical
/ˌsuːpəˈkrɪtɪkəl/
adjective
1.
(physics) (of a fluid) brought to a temperature and pressure higher than its critical temperature and pressure, so that its physical and chemical properties change
2.
(nuclear physics) of or containing more than the critical mass
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