General Science

  • adjective used for cooling or freezing purposes
  • noun a substance used to provide cooling or freezing either as the working substance of a refrigerator or by direct absorption of heat

Cars & Driving

  • noun a substance used in refrigerating systems; automotive air conditioners now use non-Freon systems as well as the refrigerant R-12 (Freon) as a heat transfer medium



  • A substance which serves to cool an object, material, region, component, device, piece of equipment, and so on. At cryogenic temperatures neon may be used as a refrigerant, at low temperatures nitrogen could be utilized, and air may be used at high temperatures, as in its cooling of heat sinks.