'aberration' definitions:

Definition of 'aberration'

From: WordNet
noun
A state or condition markedly different from the norm [syn: aberrance, aberrancy, aberration, deviance]
noun
A disorder in one's mental state
noun
An optical phenomenon resulting from the failure of a lens or mirror to produce a good image [syn: aberration, distortion, optical aberration]

Synonyms of 'aberration'

From: Moby Thesaurus