1. a very narrow groove on a long-playing phonograph record
Usage: technical

Examples

• The microgroove technology allowed LP records to play for much longer than earlier formats.
• Each microgroove on the vinyl record contains the audio information.
• The invention of the microgroove in 1948 revolutionized the music industry.
• A diamond stylus carefully tracks the microgroove to reproduce sound.
• The microgroove system enabled high-fidelity recordings on 33⅓ RPM records.
• Dust particles can interfere with the microgroove and affect sound quality.