Supercritical

adj

Definitions

Adjective
  1. 1
    Of a substance or system above a critical threshold or range.; Above its critical temperature and critical pressure.
  2. 2
    Of a substance or system above a critical threshold or range.; Having a mass sufficient to sustain an accelerating fission chain reaction.
  3. 3
    Of a substance or system above a critical threshold or range.; Above the speed of sound.
Adjective
  1. 1
    (especially of fissionable material) able to sustain a chain reaction in such a manner that the rate of reaction increases wordnet

Etymology

From super- + critical.

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