retrofire

From retro- + fire.

retrofire (plural retrofires)

1. The firing of rockets directed opposite to a craft's direction of motion in order to slow down.

   The spaceship needs to turn around so its retrofire rockets slow it down and put it in a lower orbit.

retrofire (third-person singular simple present retrofires, present participle retrofiring, simple past and past participle retrofired)

1. To fire rockets of a craft in the direction opposite to its direction of motion in order to slow down.