ABERRATION

noun Etymology: Latin aberrare Date: 1594 the fact or an instance of being aberrant especially from a moral standard or normal state, failure of a mirror, refracting surface, or lens to produce exact point-to-point correspondence between an object and its image, unsoundness or disorder of the mind, a small periodic change of apparent position in celestial bodies due to the combined effect of the motion of light and the motion of the observer, an aberrant individual, ~al adjective