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verb (used with object), supercharged, supercharging.
to charge with an abundant or excessive amount, as of energy, emotion, or tension.
to supply air to (an internal-combustion engine) at greater than atmospheric pressure.
pressurize ( def 3 ).

1760–70; super- + charge

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
supercharge (ˈsuːpəˌtʃɑːdʒ)
1.  to increase the air intake pressure of (an internal-combustion engine) with a supercharger; boost
2.  to charge (the atmosphere, a remark, etc) with an excess amount of (tension, emotion, etc)
3.  to apply pressure to (a fluid); pressurize

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1919, originally of internal combustion engines, from super- + past tense of charge (v.).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The entrepreneurial boom was supercharged by two developments.
High power density: the closed loop allows the engine to be effectively supercharged with little parasitic losses.
If an engine is turbocharged or supercharged, then a large valve area is not as important.
Fully belled and whistled, it didn't seem a good match for the supercharged,
  four-cylinder engine.
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