Xenophone is a word that refers to an imaginary musical instrument. The term is not commonly used, and its spelling can be a bit tricky to remember. The correct spelling of the word is with an "x", not a "z", which is a common mistake. The IPA phonetic transcription for the word is /ˈzɛnəfoʊn/. The "x" sound is represented by the IPA symbol /z/, while the "ph" combination is represented by the symbol /f/. The final "e" is silent.