rarefy: Meaning and Definition of
Pronunciation: (râr'u-fī"), [key]
— v., -fied, -fy•ing.
- to make rare or rarer; make less dense: to rarefy a gas.
- to make more refined, spiritual, or exalted.
- to become rare or less dense; become thinned: Moisture rarefies when heated.
- rarefy (Thesaurus)