Definitions
There is 1 meaning of the phrase
File Name Extension.
File Name Extension - as a 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
Example: "Most applications provide extensions for the files they create"
Synonyms (Exact Relations)
extensionfilename extensionExample Sentences
"The .pdf file name extension indicates that the file is in Portable Document Format."
"Please make sure to include the appropriate file name extension (.jpg, .png, etc.) when saving the image."
"The file name extension .txt typically represents a plain text document."
"I couldn't open the file because it didn't have a file name extension."
"The file name extension .xlsx is commonly used for Microsoft Excel files."