(n) a letter that has two or more pronunciations, Syn. polyphonic letter, Example:`c' is a polyphone because it is pronounced like `k' in `car' but like `s' in `cell'
3. (Mus.) Consisting of several tone series, or melodic parts, progressing simultaneously according to the laws of counterpoint; contrapuntal; as, a polyphonic composition; -- opposed to homophonic, or monodic. [ 1913 Webster ]