Weather / B1

OKS-ij-uh-n/ˈɒksɪdʒən/

Oxygen is the gas we breathe (uncountable). Air is the mixture; oxygen is one part. O2 is informal. Wards: portable oxygen by the bed, not in the day room.

Meaning

The gas in the air that people and animals need to breathe (uncountable).

Examples

• “Portable oxygen is stored by the bed, not in the day room.”
• “Oxygen masks dropped in the safety film; that is aviation, not an A&E protocol.”

Good to know

Uncountable. related: air. NHS / science. on oxygen = receiving oxygen therapy. Not “oxygene”. Formula O₂ in science papers.

Topics

New