aberration

/ˌæbəˈreɪʃən/
noun
  1. A temporary or unusual change from what is normal or expected.
    • The warm winter was a climate aberration that confused the plants.
    • Forgetting her lines on stage was a rare aberration for the experienced actress.
    • His rude behavior was an aberration; he is usually very polite.
  2. A problem with a lens or mirror that prevents a clear image from forming.
    • Camera manufacturers work hard to reduce chromatic aberration in their lenses.
    • The scientist corrected the optical aberration by adding a second lens.
    • The telescope's lens had a slight aberration that made stars look blurry.
Antonyms
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