file name extension

Từ điển WordNet v3.1 - WordNet Dictionary

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
- most applications provide extensions for the files they create
- most BASIC files use the filename extension .BAS
• Syn:
extension, filename extension
• Hypernyms:
string
• Part Holonyms:
filename, file name, computer filename, computer file name