file name extension   (TTS Sound)

The file_name_extension has 1 Senses.

• filename extension, file name extension, extension
• 拡張子
• 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"
• ピリオドから始まり、一つ以上の文字が続く文字列