Etymologically
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acronym

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Pronunciation

  • UK: /ˈækɹənɪm/[1]
  • US: /ˈækɹəˌnɪm/[1]

Etymology

It is formed from English acro- + -onym,[2][3][4][5][6] after German Akronym, recorded from 1921 or earlier;[2][1] Merriam-Webster thinks the English word was probably borrowed from the German one.[7] Etymonline calls it an American coinage.[8] The first element is from Ancient Greek ἄκρον (ákron, “tip, end”),[1][3][9] and the second, abstracted from words such as synonym and homonym,[3][8][1] from ὄνυμα (ónuma, “name”), a dialect form of ὄνομα (ónoma),[10][1] ultimately from Proto-Indo-European *no-men- (“name”).[8]

Earliest recorded meaning

A group of initial letters used as an abbreviation, each letter pronounced separately (what is now often called an initialism): 1940, in W. and E. Muir's translation of a book by L. Feuchtwanger.[2]

Semantic evolution

In 1943 the word was used in American Notes & Queries for a word formed from the initial letters of other words and pronounced as a word, such as radar or NATO;[2][3][8] this is the date most dictionaries give for the word.[8][3][7] Etymonline notes that, apart from cabbalistic texts and acrostic poems, forming words this way was uncommon before the 20th century.[8] The verb acronym, to turn into or call by an acronym, followed in 1967.[2][3] Usage authorities remain divided over whether acronym should cover abbreviations such as FBI that are spoken letter by letter;[11] Grammarphobia points out that this was in fact the earliest English meaning.[11][2]

Timeline

  • by 1921 – German Akronym recorded.[2]
  • 1940 – a group of initial letters pronounced separately.[2]
  • 1943 – a word formed from initial letters and pronounced as a word.[2][3][8]
  • 1967 – verb, to make into an acronym.[2][3]

Meanings

Noun

  1. A word formed from the first letters or syllables of the words of a name or phrase and pronounced as a word, such as radar or snafu.[7][5][2]
  2. Loosely, any abbreviation made of initial letters, even when the letters are pronounced separately; an initialism.[2][4][11]

Verb

  1. To shorten to an acronym, or to call by one.[2][4]

Word family

  • acronymic
  • acronymically

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins
  6. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  7. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  8. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  9. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  10. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  11. ^ a b c O'Conner, Patricia T.; Kellerman, Stewart, The Grammarphobia Blog, grammarphobia.com, p. "The acronym, initially speaking", 29 June 2026