Oxygen therapy

Definition of oxygen therapy
National Cancer Institute

oxygen therapy

(OK-sih-jen THAYR-uh-pee)
Treatment in which a storage tank of oxygen or a machine called a compressor is used to give oxygen to people with breathing problems. It may be given through a nose tube, a mask, or a tent. The extra oxygen is breathed in along with normal air. Also called supplemental oxygen therapy.

Source: NCI Dictionary of Cancer Terms