A substance that by undergoing a change in phase (liquid to gas, gas to liquid) releases or absorbs a large latent heat in relation to its volume, and thus effects a considerable cooling effect.
Causing cold or cooling.
a substance used to provide cooling (as in a refrigerator)
causing cooling or freezing; "a refrigerant substance such as ice or solid carbon dioxide"
any substance used to provide cooling (as in a refrigerator)
