Definitions

1. noun

a colorless, odorless, tasteless gas that is essential for respiration and is a constituent of the atmosphere in small amounts.

“The scuba diver breathed in a tank of oxygen to avoid running out.”

2. noun

a substance containing oxygen, especially one that is highly reactive.

“The chemist mixed the oxygen compound with the other reactants to create a new compound.”

3. verb

to add oxygen to (a liquid or a container), typically by bubbling it through the liquid.

“The bartender oxygenated the champagne before serving it.”