(n): the occurrence of a change for the worse
(n): a shape resulting from distortion
(n): the spatial arrangement of something as distinct from its substance
(n): an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
(n): a physical phenomenon related to or involving light
(n): 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)
(n): a physical phenomenon involving electricity
(n): a physical phenomenon associated with the production or transmission of sound
(n): the act of distorting something so it seems to mean something it was not intended to mean
(n): a willful perversion of facts
(n): the mistake of misrepresenting the facts
(n): a wrong action attributable to bad judgment or ignorance or inattention