1. an electronic musical instrument played by moving the hands near two antennas to control pitch and volume without touching the instrument

Examples

• The theremin produces an eerie, otherworldly sound.
• She learned to play the theremin by carefully controlling her hand movements.
• The movie soundtrack featured a haunting theremin melody.
• Leon Theremin invented the theremin in the 1920s.
• The theremin is one of the earliest electronic instruments.
• Many science fiction films use the theremin for atmospheric music.