the.com/condenser

means A device that cools a vapor until it loses enough energy to condense back into a liquid.

from From Latin 'condensare' — 'con-' (together) plus 'densare' (to make thick, from densus, dense) — literally 'to make thick together.' The word first described the physical act of compressing or thickening matter, and by the 17th–18th centuries it was applied to scientific instruments: optical lenses that condensed light, electrical devices that condensed charge (the ancestor of the capacitor), and eventually the mechanical parts that condense vapor into liquid in engines and refrigerators.