refrigerant

Meanings

1. A substance used in a heat cycle that undergoes a phase change between gas and liquid to allow the cooling, as in refrigerators, air conditioners, etc.
2. That which makes cool or cold, such as a medicine for allaying the symptoms of fever.

1. That cools or freezes; providing relief from heat or fever.

Etymology

From Latin refrīgerāns, present participle of refrīgerō (“to cool, to refresh”).