Retrofire Definition

rĕtrō-fīr
retrofire
verb
To ignite (a retrorocket)
Webster's New World
To become ignited.
Webster's New World
noun
The igniting of a retrorocket.
Webster's New World
adjective

Describing rockets that are directed opposite to the direction of motion and used to slow down.

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