Off-gassing in solids is known as pyrolysis; what is it called in liquids?

The process of off-gassing in liquids is referred to as vaporization. This occurs when the molecules in a liquid gain enough energy to transition into the gas phase. Vaporization is a broader term that encompasses all forms of transitioning from liquid to vapor under various conditions, including boiling and evaporation.

In contrast, evaporation is a specific type of vaporization that occurs at any temperature when molecules at the surface of a liquid gain enough energy to escape into the atmosphere. While evaporation relates to the gradual transition at lower temperatures, vaporization includes both evaporation and the rapid phase change at boiling points.

Combustion refers to a chemical reaction typically involving a fuel and an oxidant, resulting in the release of heat and light, and condensation is the process where gas transitions back into a liquid. Therefore, vaporization is the most accurate term for off-gassing in liquids, aligning it with pyrolysis in solids which also involves the transformation of material phases.