10 letters · 22 points in Scrabble
adjective having two or more phonetic values
adjective of or relating to or characterized by polyphony
adjective having two or more independent but harmonically related melodic parts sounding together
originOriginally from Ancient Greek πολύφωνος (polúphōnos) + -ic. In later use from poly- + -phonic.
Etymology from Wiktionary, CC BY-SA 3.0