Definition of "economizer" [e•con•o•mi•zer]

• A person who avoids waste (noun)
• A heat exchange device in a boiler that improves efficiency and saves fuel (noun)

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• "Everything that I've said might make it seem like I don't, but the fact is that I LOVE Stirling engines (Though I hate calling them that, since Stirling did not invent them, but rather patented the "economizer" a device that improves their efficiency)."
• ""economizer" to capture and recycle air that can be used as "free cooling.""
• "I don't believe that there is a single hybrid in the senior parking lot of my kids 'high school that isn't either a pretend fuel economizer (like a Lexus GS450h or the hybrid Tahoe) or their mother's."