Heating above the temperature at which an equilibrium phase transformation should occur without actually obtaining the transformation.

the process of heating a liquid above its boiling point without its boiling

The process of heating a substance to much higher temperatures than are needed to maintain it in a gas phase.

The heating of a liquid to a temperature above its normal boiling point.

Creating a rise in temperature by adding heat energy to a refrigeration vapor.

Theoretically, the temperature above the liquidus. In practice, it usually means temperature above the usual pouring range. See Liquidus.