- In physics a Phonon refers to a quasiparticle phenomenon in which atoms composing a lattice of condensed matter (like a solid or liquid) oscillate at a single uniform frequency, which can produce "pulses" of sound.
- The term "Phonon" also comes from the Greek word φωνή (phonē), which literally translates to "sound" or "voice". This reflects the "sound" theme common among many tuner monsters and tuner-monster-related cards ("Frequency Magician," "Tune Warrior," "Tuning," "Discord," etc.).
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