1
: a computer file format for the compression and storage of digital audio data
2
: a computer file (as of a song) in the MP3 format

Example Sentences

downloading MP3s off the Internet

Word History

Etymology

from the file extension .mp3 used for such files, short for MPEG Audio Layer 3

First Known Use

1994, in the meaning defined at sense 1

Time Traveler
The first known use of MP3 was in 1994

Dictionary Entries Near MP3

Cite this Entry

“MP3.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/MP3. Accessed 9 Dec. 2022.

Kids Definition

1
: a computer file format for the compression and storage of digital audio data
2
: a computer file (as a song) in MP3 format
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