NOUN
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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
How To Use filename extension In A Sentence
- Be aware though that there is no standardization to filename extension usage, and many different people have used extensions to apply to many different things.
- most BASIC files use the filename extension .BAS
