oxygen
1 of 1noun/ˈɑksɪdʒən/
1
a chemical element in gas form with no color that living things need for breathing
A2Learn more on Wikipedia- Trees release oxygen into the atmosphere as a byproduct of photosynthesis.
- Divers carry tanks of compressed oxygen to breathe underwater.
- The doctor administered oxygen to the patient to help with breathing difficulties.
- Oxygen is necessary for the combustion process in engines and fires.
- Blood transports oxygen from the lungs to the tissues of the body.