The process of purifying and concentrating a liquid through separating its components by heating it to the point of vaporization and collecting the cooled condensate (vapor that reverts to liquid through condensation). The apparatus used for distillation is a still, of which there are two types—pot still and continuous still. distillation n. The end product of the distillation process. Distilled spirits (such as BRANDY) are typically based on fermented (see FERMENTATION) fruit or cereal grains. After distillation, many are flavored in some way, either with added ingredients or by barrel AGING, or both.