<p><strong>noun</strong></p><ul><li>A propelling agent.</li><li>The charge of explosive used to propel the projectile from a gun.</li><li>A substance, usually a mixture of fuel and oxidizer, for propelling a rocket.</li><li>A compressed inert gas that serves to dispense the contents of an aerosol container when the pressure is released.</li></ul><p><strong>End of Response</strong></p>