Definitions:

1. Can refer to a mental state or behavior that is abnormal or atypical. NOUN
   • The psychologist noted the patient's aberration from typical cognitive patterns.
2. Can refer to an irregularity, anomaly, or departure from the usual pattern. NOUN
   • The scientist found an aberration in the data that required further investigation.
3. In astronomy, describes the apparent displacement of a celestial object due to the motion of the observer. NOUN
   • The lelescope's lens had an aberration that distorted the image of the stars.
4. In optics, refers to a defect in a lens or mirror that causes distortion of an image. NOUN
   • Aberration of the optical system caused the light to scatter and blur the image.
5. Often describes an unusual or unexpected event or behavior that stands out as different from what is typical or expected. NOUN
   • His sudden departure from the company was an aberration that left everyone puzzled.
6. Something that deviates from the standard, normal, or expected course. NOUN
   • The sudden drop in temperatures in July was an aberration from the usual summer heat.

Synonyms:

• abnormality
• Anomaly
• Deviation
• Irregularity
• outlier