1. The act or process of cooling a substance: Dr. Thompson told Alice that the medicine she had to take needed refrigeration to prevent it from getting warm.
2. The process of reducing the temperature: Refrigeration is especially important for lowering the body temperature of patients and experimental animals.

A process within a refrigeration system during which the primary fluid (the refrigerant) and the secondary fluid (the absorbent) mix after the refrigerant leaves the evaporator.

1. A standard process of refrigeration, in which a motor-driven compressor drives the circulation of a refrigerant through a closed loop, so that the refrigerant withdraws heat energy from the load (space to be cooled) as it changes from a liquid to a gaseous state.
2. The removal of heat by utilizing a refrigerant subjected to cycles of refrigerating thermodynamics and employing a mechanical compressor.