Search Result：file name extension
file name extension 
(TTS Sound)
(TTS Sound)Overview of noun file_name_extension
The noun file name extension has 1 sense
- extension, filename extension, 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")