Definition of retro-fire in English:

retro-fire

noun

Science Fiction Astronautics
  • The part of a space mission in which the retro-rockets of a spacecraft are fired; the firing itself.

verb

Astronautics
  • 1with object To 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.

  • 2no object To fire the retro-rockets of a spacecraft.

Origin

1950s; earliest use found in Journal of the Franklin Institute. From retro- + fire<br>1960s. From retro- + fire. Compare slightly earlier retro-fire and retro-firing.

Pronunciation

retro-fire

/ˈrɛtrəʊfʌɪə/