(mathematics) The condition of being supercritical

(physics, of a fluid) Above its critical temperature and critical pressure. / (physics, of a fissile material) Having a mass sufficient to sustain an accelerating fission chain reaction.

In a supercritical way.

(physics) A substance at a temperature and pressure above its own thermodynamic critical point that can diffuse through solids like a gas and dissolve materials like a liquid.

(physics) A mass of fissile material that is more than sufficient to sustain a nuclear chain reaction

plural of supercritical fluid

plural of supercritical mass