backronymic
Backronymic describes a word or phrase formed by retroactively interpreting an existing acronym or initialism as if the letters already stood for a phrase. In other words, a backronym is created after an acronym is in use, by assigning words to its letters to produce a meaningful or humorous expansion. The term is often used in technology, government, pop culture, and branding to evoke a memorable motto, emphasize a function, or convey a pun. The practice ranges from deliberate wordplay to casual reinterpretations that arise after the fact. Some backronyms are recursive or self-referential, meaning the expansion includes the original acronym.
A widely cited example is PHP, whose official expansion is PHP: Hypertext Preprocessor, a recursive acronym
Scholarly and practical usages treat backronyms as linguistic playful devices rather than genuine etymologies, and they