Condensation's the change of the physical state of aggregation (or simply state) of matter from gaseous phase into liquid phase. When the transition happens from the gaseous phase into the solid phase directly, bypassing the liquid phase, the change's called deposition. Condensation commonly occurs when a vapor's cooled to its dew point, but the dew point can also be reached through compression. The condensed vapor's called a condensate, the laboratory or the industrial equipment used for conde… (More on Condensation)