A recursive acronym is an acronym that refers to itself in the process of defining itself. In other words, one of the letters in the acronym stands for the acronym itself. A well-known example of a recursive acronym is "GNU," which stands for "GNU's Not Unix." Here, the 'G' in "GNU" stands for "GNU," creating a self-referential loop. Another example is "PHP," which stands for "PHP: Hypertext Preprocessor.
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