She felt overwhelmed by the rarified atmosphere at the academic conference.

The researchers rarified the air in the test chamber to simulate high-altitude conditions.

Cold, dry air rarifies at high altitudes, making it harder to breathe.

The scientist observed the rarifying atmosphere around the probe and adjusted the instruments accordingly.

The lab installed several rarifiers to thin the gas before testing.

To test the reaction, the chemist chose to rarify the gas before measurement.

The chemist adjusted the rarifier before starting the experiment to ensure the gas mixture was properly diluted.