A device or substance that converts something into fuel or helps fuel combustion.
From 'fuel' plus the suffix '-izer' (from the verb '-ize'), which creates nouns for devices or agents that perform or enable an action.
The '-ize' and '-izer' suffix family is hugely productive in modern English, especially in technology—'optimize,' 'optimizer,' 'digitize,' 'digitizer'—letting us quickly name new processes and gadgets.
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