file name extension

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Noun1.file name extension - a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename; "most applications provide extensions for the files they create"; "most BASIC files use the filename extension .BAS"
computer file name, computer filename, file name, filename - (computer science) the name given to a computer file in order to distinguish it from other files; may contain an extension that indicates the type of file
string - a linear sequence of symbols (characters or words or phrases)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Make sure it includes a file name extension (like .EXE, .RAR, etc.) and is in the same domain as the current page.
HLS, which uses MPEG-2 Transport Stream (M2TS), has a manifest file with an .m3u8 file name extension, while others use extensions such as .ism or .f4m.
files in a particular directory or with a particular file name extension), .IX2 files contain the actual file names and .IX3 files store the actual index information.