filename extension

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Noun1.filename 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 ?
Need to delete all those BAK files from your hard drive?
(This assumes that you have kept all your documents in subdirectories of WP51.) IF you wish to clean your entire disk of BAK files, go to the root and type GLOBAL DEL*.BAK.