propellant
1 of 2noun/prəˈpɛlənt/
1
a substance that helps something move forward
- The rocket was loaded with a powerful propellant to achieve maximum thrust during liftoff.
- The engineer carefully selected the appropriate propellant for the spacecraft's propulsion system.
- The new fuel formulation served as an efficient propellant for the experimental jet engine.
- The firefighter used a foam with a special propellant to quickly extinguish the flames.