Main Entry: ab·er·ra·tion

Pronunciation: \ˌa-bə-ˈrā-shən\

Function: noun

Etymology: Latin aberrare

Date: 1594

1 : the fact or an instance of being aberrant especially from a moral standard or normal state
2 : failure of a mirror, refracting surface, or lens to produce exact point-to-point correspondence between an object and its image
3 : unsoundness or disorder of the mind
4 : 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
5 : an aberrant individual

— ab·er·ra·tion·al \-shnəl, -shə-n^əl\ adjective