Definitions

1. noun

A device or system that generates or transmits thrust, typically in spacecraft or aircraft, or a person or thing that propels or drives something forward.

“The spacecraft’s propulsor was designed to achieve faster-than-light travel.”

2. noun

A component of an engine or machine that produces a propulsive force.

“The propulsor was damaged in the crash and needed to be replaced.”

3. noun

A person who promotes or advances a particular idea or cause.

“The entrepreneur was a key propulsor of the new startup’s success.”