MP3 Definition
ĕmpē-thrē
noun
A format for processing a digital audio file so as to remove unneeded data and produce a smaller file for transmission on the Internet, for use in portable players, etc.
Webster's New World
An audio file so produced.
Webster's New World
Other Word Forms of MP3
Noun
Singular:
MP3
Plural:
mp3sOrigin of MP3
From MP(EG-1 layer) 3
From American Heritage Dictionary of the English Language, 5th Edition