filename : Idioms & Phrases
computer filename
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noun (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
file name; computer file name; filename.
WordNet
filename extension
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noun a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename
file name extension; extension.
- most applications provide extensions for the files they create
- most BASIC files use the filename extension .BAS