Adjective
Pertaining to a condition where the rocket engine is being consumed and expelled as part of the rocket exhaust, where it is not a part of normal operations.
Coordinate terms: oxygen-rich, oxidant-rich, fuel-rich, carburant-rich
(automotive) Pertaining to a condition where there is excessive fuel in the fuel-to-air ratio, in the running of an internal combustion engine.
Synonyms: rich, fuel-rich, oxygen-poor
Antonyms: engine-lean, engine-poor, oxygen-rich, fuel-lean, fuel-poor, lean