Etymologically
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distortion

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Pronunciation

  • UK: /dɪsˈtɔːʃən/[1]

Etymology

It is borrowed from Latin distortiō (“a twisting, distortion”),[2][3][4][5][6] a noun of action from the past participle of distorqueō (“to twist different ways, distort”),[3][2][5] from dis- and torqueō (“to twist”).[3] The OED compares Middle French distorsion, used by Paré in the 16th century.[2] It is related to distort and torque.[3][5]

Earliest recorded meaning

The action of twisting something out of shape, or the state of being twisted, especially of the body or a limb: 1581, in Mulcaster's Positions.[2][3][6]

Semantic evolution

From the bodily sense the word passed early to words and facts: the twisting of someone's words, or the perversion of opinions or history so as to misapply them, is recorded from 1650 in the OED[2] and the 1640s in Etymonline.[3] Johnson (1755) defined it only as an irregular motion that writhes the face or puts the limbs out of order, quoting Prior and Addison.[7] A temporary twisting movement, a contortion, is recorded from 1718,[2] a distorted image from Shelley (before 1822),[2] and the optical sense, the alteration of an image by a lens or mirror, from the mid 18th century.[4] The scientific age added a mathematical and optical sense of change of shape without breach of continuity (1879),[2] the electronic sense, an unwanted change in the waveform of a signal (1887, in Heaviside),[2][3] used specifically of amplifiers by 1962,[3] and a sense in psychology for the alteration of unconscious material before it reaches the conscious mind (1910).[2]

Timeline

  • 1581 – the action of twisting out of shape; a twisted condition of the body.[2][6]
  • 1650 – the twisting of words or facts so as to change their sense.[2]
  • 1718 – a twisting or writhing movement, a contortion.[2]
  • mid 18th century – the alteration of an image by a lens or mirror.[4]
  • before 1822 – a distorted form or image.[2]
  • 1879 – in mathematics and optics, a change of shape without breach of continuity.[2]
  • 1887 – a change in the waveform of a signal.[2][3]
  • 1910 – in psychology, the alteration of repressed material before it reaches consciousness.[2]

Meanings

Noun

  1. The act of distorting, or the state of being distorted; a twisting out of the natural shape.[8][6][2]
  2. A misrepresentation that falsifies facts or their meaning: The report was a distortion of what the minister had said.[6][2]
  3. Something distorted, such as a warped image.[8][2]
  4. In optics, an aberration of a lens in which the magnification changes with distance from the axis.[8][4]
  5. In electronics, an unwanted change in the waveform of a signal, often heard as a loss of clarity in sound reproduction.[8][2]
  6. In psychology, a change in perception or memory so that it no longer matches reality, or the alteration of unconscious material before it reaches awareness.[8][2]

Word family

  • distortional
  • nondistortion
  • predistortion
  • barrel distortion
  • pincushion distortion
  • distort
  • torque
  • contortion
  • torsion

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r s t u v Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  6. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  7. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  8. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins