aberration

ab·er·ra·tion

noun \ˌab-ə-ˈrā-shən\

Definition of ABERRATION

1

: failure of a mirror, refracting surface, or lens to produce exact point-to-point correspondence between an object and its image

2

: unsoundness or disorder of the mind

3

: an aberrant organ or individual

—ab·er·ra·tion·al \-shnəl, -shən-əl\ adjective