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A mythical substance which is supposededly vital to the functioning of electronic equipment. Therefore when the magic smoke leaks out, the equipment stops working.

This term is often heard when some hapless individual wires equipment up backwards or to the wrong voltage supply, causing the circuit boards to fry. At this point, some wag will say "that won't work again, because you've let the magic smoke out".
by Roy Hills December 30, 2004
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Apr 17 Word of the Day
Dejagoo is the strange feeling that you've been in this sticky situation before. It is dejavu due to goo. Usual symptoms are shivers down once's spine followed by disgust, especially if actual goo is involved.
Dude I like just like stepped in doggy doodoo. And i was like, oh dude this feels familiar. Then I remembered that I like stepped in pup poo like last weekend too. Surreal man, it was like total dejagoo.
by Hukra March 14, 2009
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2
The essential essence that lives inside of all electronic parts. If the smoke is allowed to leave the device, it will no longer work. The smoke can never be put back again.
Don't overclock your PC or you will let the magic smoke out.
by nfi December 11, 2007
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