verb
- making or becoming thin, less dense, or more refined
Usage: present participle of rarefy
Examples
- The air is rarifying as we climb higher up the mountain.
- The scientist observed the gas rarifying under reduced pressure.
- High altitude training involves exercising in rarifying air conditions.
- The rarifying atmosphere made breathing increasingly difficult.
- Industrial processes can involve rarifying various substances.
- The rarifying effect of heat caused the metal to expand.