Definitions

1. adjective

relating to or characterized by the production of sound by a single channel, instrument, or voice

“The monophonic recording from the 1950s is a rare find for music collectors.”

2. noun

a monophonic sound or recording

“The monophonic track played softly in the background.”

3. noun

music or a recording that is monophonic

“The old monophonic film is hard to watch with its outdated sound quality.”