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Word or name made from the initial components of the words of a sequence / From Wikipedia, the free encyclopedia

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An acronym is a word or name consisting of parts of the full name's words. Sometimes, initialism[1] or alphabetism is used to refer to acronyms formed from the string of initials which are usually pronounced as individual letters, as in the FBI (Federal Bureau of Investigation).[lower-alpha 1] But acronyms sometimes use syllables instead, as in Benelux (short for Belgium, the Netherlands, and Luxembourg), NAPOCOR (National Power Corporation), and TRANSCO (National Transmission Corporation). They can also be a mixture, as in radar (Radio Detection And Ranging) and MIDAS (Missile Defense Alarm System).

"NYPD", an acronym for "New York Police Department", used on the side of a police car

Acronyms can be pronounced as words, like NASA and UNESCO; as individual letters, like CIA, TNT, NPC, BLM, and ATM; or as both letters and words, like JPEG (JAY-peg), CSIS (SEE-sis), and IUPAC (I-U-pak). Some are not universally pronounced one way or the other, and it depends on the speaker's preference or the context in which it is being used, such as SQL (either "see-kwel" or "ess-cue-el").

The broader sense of acronym—the meaning of which includes terms pronounced as individual letters—is sometimes criticized, but that is the term's original meaning,[2] and is still in common use.[3] Dictionary and style-guide editors are not in universal agreement on the naming for such abbreviations, and it is a matter of some dispute whether the term acronym can be legitimately applied to abbreviations which are not pronounced "as words", nor do these language authorities agree on the correct use of spacing, casing, and punctuation.

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