critical temperature

1. The temperature above which a gas cannot be liquefied, regardless of the pressure applied.
2. The temperature at which a material becomes a superconductor.

1. The temperature above which a gas cannot be liquefied by an increase of pressure. See also critical state. 2. See transition point.

1. The temperature at which a steel structure cannot carry the service load for which it was designed because of softening of the steel that occurs when it is heated significantly.
2. Same as self-ignition temperature.

The temperature above which a gas cannot be liquefied, regardless of the pressure applied.