Definition of acronym in English:

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acronym

Pronunciation: /ˈakrənɪm/

noun

An abbreviation formed from the initial letters of other words and pronounced as a word (e.g. ASCII, NASA). Compare with initialism.
Example sentences
  • A whole language of abbreviated words and acronyms has developed with the huge popularity of the text message.
  • There were also plenty of acronyms whose definitions were not just different versions of the same term.
  • It's now perfectly acceptable to lowercase a company name, for example, and to create words out of acronyms.

Origin

1940s: from Greek akron 'end, tip' + -onym.

More
  • acrobat from early 19th century:

    The earliest acrobats were tightrope walkers, which explains why the word derives from Greek akrobatos, meaning ‘walking on tiptoe’. The akro- part of akrobatos meant ‘tip, end, or summit’ and is found in several other English words. The acropolis (mid 17th century) of a Greek city, most famously Athens, was the fortified part, which was usually built on a hill. Acrophobia (late 19th century) is fear of heights. An acronym (mid 20th century) is a word such as laser or Aids formed from the initial letters of other words, and an acrostic (late 16th century) is a poem or puzzle in which the first letters in each line form a word or words.

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