General English


  • noun
    (written as MP3)
    a way of encoding digital audio data into a compressed data format that is approximately one twelfth the size of the original without perceptible loss of quality.


  • (written as MP3)
    An audio compression technique which reduces the size of audio files by a factor of 12 or more, without a significant reduction in sound quality. Used extensively to transmit music files over the Internet.

Information & Library Science

  • noun
    (written as MP3)
    a computer file standard for downloading compressed music from the Internet, playable on a multimedia computer with appropriate software.
  • suffix a file extension for an MP3 file.

Media Studies

  • noun
    (written as MP3)
    a format for compressing music files to approximately one tenth of their original size, while losing little quality