supercritical adjective. [su:pǝ'krɪtɪk(ǝ)l, sju:-] E17.
[from SUPER- 3 + CRITICAL.]
1. Highly critical. E17.

2. Science. Of, pertaining to, or designating a fluid at a temperature and pressure greater than its critical temperature and pressure. M20.

3. Science. Of a flow of fluid: faster than the speed at which waves travel in the fluid. Of an aerofoil: giving rise to such a flow over its surface when its speed relative to the bulk fluid is subcritical, but in such a way that flow separation is largely avoided. M20.

4. Nuclear Physics. Containing or being more than the critical mass. M20.

■ ,supercriti'cality noun supercritical state M20.

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