Definitions from Wiktionary (UDF)

▸ noun:  (computing) Initialism of Universal Disk Format.
▸ noun:  (computing) Initialism of user-defined function. [(computing) A program or subroutine, provided by the user rather than being built into the system, that may return a value and may take input parameters.]
▸ noun:  (aviation) Abbreviation of unducted fan. [(aviation) A modified turbofan jet engine with the fan disc outside the engine duct of an aircraft.]
▸ noun:  (Indian politics) Initialism of United Democratic Front (Kerala)


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