Definition of initialism in English:

initialism

Syllabification: in·i·tial·ism
Pronunciation: /iˈniSHəˌlizəm
 
/

noun

  • An abbreviation consisting of initial letters pronounced separately (e.g., CPU).
    More example sentences
    • An acronym is a word group created in a similar way to an initialism but which is pronounced as a word.
    • It is usually acceptable to start a sentence with an acronym or initialism that begins with a capital letter.
    • We have a photo gallery, an index of every article published from 1956 to present, and a list of aviation terms, acronyms, initialisms and jargon.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody