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aberration

[ ab-uh-rey-shuhn ]
/ ˌæb əˈreɪ ʃən /
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See synonyms for: aberration / aberrational on Thesaurus.com

noun

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Origin of aberration

First recorded in 1585–95; from Latin aberrātiōn- (stem of aberrātiō ) “distraction, diversion, relief (from pain or sorrow),” equivalent to aberrāt(us), past participle of aberrāre “to divert, forget for a time; to wander, deviate” + -iōn-; see origin at aberrant,-ion
ab·er·ra·tion·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for aberration

aberration
/ (ˌæbəˈreɪʃən) /

noun

deviation from what is normal, expected, or usual
departure from truth, morality, etc
a lapse in control of one's mental faculties
optics a defect in a lens or mirror that causes the formation of either a distorted image or one with coloured fringesSee also spherical aberration, chromatic aberration
astronomy the apparent displacement of a celestial body due to the finite speed of light and the motion of the observer with the earth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for aberration

aberration
[ ăb′ə-rāshən ]

n.

A departure from the normal or typical.
A psychological disorder or abnormal alteration in one's mental state.
A defect of focus, such as blurring in an image.
An imperfect image caused by a physical defect in an optical element, as in a lens.
A deviation in the normal genetic structure or number of chromosomes in an organism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for aberration

aberration
[ ăb′ə-rāshən ]

A deviation in the normal structure or number of chromosomes in an organism.
A defect in a lens or mirror that prevents light rays from being focused at a single point and results in a distorted or blurred image.♦ Aberration that results in distortion of color is called chromatic aberration.♦ Aberration that is caused by imperfections in the surface or shape of a spherical mirror or lens is called spherical aberration. See also astigmatism coma2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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