distortion

noun

1. 1

   the mistake of misrepresenting the facts

2. 2

   the act of distorting something so it seems to mean something it was not intended to mean

3. 3

   a change for the worse

4. 4

   an optical phenomenon resulting from the failure of a lens or mirror to produce a good image

5. 5

   a change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal)

   heavy metal guitar players use vacuum tube amplifiers to produce extreme distortion

6. 6

   a shape resulting from distortion