Etymologically
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microscope

This is the current revision of this entry, as edited by bogdan on 31 October 2026 at 10:42. This address is a permanent link to this version.
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Pronunciation

  • UK: /ˈmaɪ.kɹəˌskəʊp/[1]
  • US: /ˈmaɪ.kɹəˌskoʊp/[1]

Etymology

Most dictionaries take it as borrowed from New Latin microscopium (“an instrument for viewing what is small”),[2][3][4][5][6] which Barnhart dates to about 1628.[7] The OED instead takes the English word as borrowed from Italian microscopio, used by J. Faber in a letter of 1625 printed among Galileo's works, which apparently comes from the post-classical Latin microscopium, a name attributed to Demiscianus in 1614.[8] The American Heritage Dictionary gives both, the Italian word being itself from the New Latin one.[9] The Latin word is formed from micro- and -scopium, the ending of telescopium, telescope;[8][10] the ending is Ancient Greek -σκόπιον (-skópion, “means of viewing”),[7][6] from σκοπέω (skopéō, “to look at, examine”),[6][11][7] and micro- is from μικρός (mikrós, “small”).[2] The word reached other languages in the same century: French microscope is recorded from 1656, German Mikroskopium from 1687 (later Mikroskop) and Spanish microscopio from 1709.[8]

Earliest recorded meaning

An optical instrument that magnifies very small objects with an arrangement of lenses: 1648, in J. Wilkins's Mathematicall Magick.[8][10] Barnhart dates the word to 1656,[7] and Etymonline to the 1650s.[2]

Semantic evolution

The word was in figurative use almost at once: Milton has it in Paradise Regain'd (1671), and the phrase under the microscope, subject to close scrutiny, comes from this use.[8][3] Johnson (1755) defined it as an "optick instrument" that gives the eye a large view of objects otherwise invisible, and quoted the Dunciad line on "the critick eye, that microscope of wit".[11] From about 1741 the name covered devices that project images of small objects,[8] and since 1907 instruments using radiation of shorter wavelength than light, such as the electron microscope, which give greater magnification than a light microscope.[8][3] The southern constellation Microscopium was introduced by La Caille in 1752,[2] and English writers called it the Microscope from 1839.[8] The verb, to examine minutely or to magnify, is a 19th-century conversion of the noun, first recorded in 1888 in the OED.[8][3]

Timeline

  • 1614 – post-classical Latin microscopium, attributed to Demiscianus.[8]
  • 1625 – Italian microscopio, in a letter of J. Faber.[8]
  • 1648 – English microscope, an optical instrument for viewing very small objects.[8][10]
  • 1656 – date given by Barnhart for the English word; also the first record of French microscope.[7][8]
  • 1671 – figurative use, in Milton's Paradise Regain'd.[8]
  • ?1741 – a device that projects images of very small objects.[8]
  • 1752 – the constellation Microscopium, introduced by La Caille.[2]
  • 1888 – verb, to scrutinize minutely or magnify.[8]
  • 1907 – an instrument using radiation other than visible light.[8]

Meanings

Noun

  1. An optical instrument with a lens or combination of lenses that gives an enlarged image of objects too small to be seen with the naked eye: She examined the leaf cells under a microscope.[12][10][8]
  2. Any instrument that uses radiation other than light, such as electrons or X-rays, to produce a magnified image of a small object.[12][10][3]
  3. under the microscope: under close, critical examination: The council's spending is under the microscope again.[3][8]
  4. the Microscope: the southern constellation Microscopium.[8][3]

Verb

  1. (rare) To examine minutely, as if with a microscope; to magnify.[10][3][8]

Word family

  • photomicroscope
  • spectromicroscope
  • stereomicroscope
  • ultramicroscope
  • microscopic
  • microscopy
  • compound microscope
  • electron microscope

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  4. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  5. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  6. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  7. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  8. ^ a b c d e f g h i j k l m n o p q r s t u Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  9. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  10. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  11. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  12. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins