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(n) A psuedo-scientific explanation, where the speaker uses scientific-sounding words to make his made-up nonsense sound legit.
The following is Joe trying to appear smart by explaining rain using bullshit science:

Well the water is sucked up by a celestial vacuum using the power of suction, then after some conversion and rotation, is drizzled on Toronto with the universal gardening hose.
by AlphaOkami March 01, 2011