Relating to or promoting combustion; of or pertaining to the process or act of burning.
From Latin 'combustus' plus the suffix '-ive' (from Latin '-ivus,' indicating relating to or tending to cause). This technical adjective emphasizes the active nature of the burning process.
Rocket scientists talk about 'combustive efficiency'—how completely an engine converts fuel into propulsive energy. The term lets them distinguish between the fuel itself and how well it actually burns in their specific engine design.
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