1. the action of driving or pushing forward
2. a force that moves something forward
Usage: technical

Examples

• The rocket’s propulsion system launched it into space.
• Wind propulsion powered the sailboat across the lake.
• The car’s propulsion comes from its electric motor.
• Jet propulsion allows airplanes to fly at high speeds.
• The submarine uses nuclear propulsion for underwater travel.
• Scientists are developing new forms of spacecraft propulsion.
• The propulsion of the boat failed during the storm.