0 past participle, past simple of test-fire --
1 to explode a nuclear weapon in order to see how effective it is: --
The highest specific impulse for a chemical propellant ever test-fired in a rocket engine was 542 seconds (5,320 m/s) with a tripropellant of lithium, fluorine, and hydrogen.
The station successfully remotely test-fired an onboard aircraft cannon at a target satellite while the station was unmanned.
This variant has been test-fired and uses a solid-fuel ramjet engine.
All barrels were test-fired for accuracy during the manufacturing process.
