noun
- substances that provide thrust to move or launch something forward, especially in rockets, missiles, or aerosol products
Examples
- The rocket used liquid propellants to reach orbit.
- Aerosol cans contain propellants that push the contents out when sprayed.
- Scientists are developing cleaner propellants for spacecraft.
- The missile’s solid propellants ignited successfully during the test.
- Hair spray and deodorants rely on propellants to create a fine mist.
- Engineers tested different propellants to improve the rocket’s efficiency.