Etymology
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aberration (n.)

1590s, "a wandering, act of straying," from Latin aberrationem (nominative aberratio) "a wandering," noun of action from past-participle stem of aberrare "to wander out of the way, lose the way, go astray," literally and figuratively, from ab "off, away from" (see ab-) + errare "to wander, stray, roam, rove" (see err). Meaning "deviation from the normal type" is attested by 1735.

Origin and meaning of aberration
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Definitions of aberration

aberration (n.)
a state or condition markedly different from the norm;
Synonyms: aberrance / aberrancy / deviance
aberration (n.)
a disorder in one's mental state;
aberration (n.)
an optical phenomenon resulting from the failure of a lens or mirror to produce a good image;
Synonyms: distortion / optical aberration
From wordnet.princeton.edu