Added 9 October 2026 panmelodion noun noun ! Definition from Wiktionary (CC BY-SA). More about panmelodion at Wordnik → Where our words come from → A 19th-century keyboard instrument whose tone is produced by wheels rubbing on metal bars. Related Words: melodicametallophoneaeolodiconaeolsklavierlamellophonedulcitoneblow-organxylophoneharmonichordarmonicaverrophonecalliope Back to today's word