main file mainferre • mainframe · · · Info · Definitions · Synonyms · Characters · · main file · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) (computer science) a computer file that is used as the authority in a given job and that is relatively permanent. Synonyms: master file, main file. · · Noun Definition 1 Synonyms · · · master file · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E