TLA is most commonly used as an abbreviation of "three letter acronym" or "three letter abbreviation", but it may also refer to: This article describes three-letter acronyms. ...
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TLA is a three-letter abbreviation itself; the term was almost certainly coined with a certain degree of self-referential humor in mind.
TLAs are particularly prone to RAS syndrome ("Redundant Acronym Syndrome syndrome"), in which one of the abbreviated words (usually the last) is added alongside the abbreviation itself - as in "ATM machine", "PIN number", and "HIV virus".
The three-letter abbreviation or three-letter acronym (TLA) is the most popular type of abbreviation in computing terminology, and is also common in political jargon.
There are even TLAs with more than 10 meanings (for example, SDI has at least 32 meanings in the English language).
TLAs became common in the United States during the New Deal of President Franklin Delano Roosevelt, including NRA for National Recovery Administration, and TVA for the Tennessee Valley Authority.