The part of a space mission in which the retro-rockets of a spacecraft are fired; the firing itself.
1950s; earliest use found in Journal of the Franklin Institute. From retro- + fire.
1To fire backwards; especially to fire (a rocket engine) in a direction which provides a spacecraft with reverse thrust and so slows any forward motion; to give (a spacecraft, missile, etc.) reverse thrust by firing a retro-rocket.
2To fire the retro-rockets of a spacecraft.
1960s. From retro- + fire.