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English noun: filename extension

1. filename extension (communication) a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename


SamplesMost applications provide extensions for the files they create.
Most BASIC files use the filename extension .BAS.


Synonymsextension, file name extension


Broader (hypernym)string


Part meronymcomputer file name, computer filename, file name, filename









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