diaphone Syllabification: (di·a·phone)Pronunciation: /ˈdīəˌfōn/Definition of diaphone noun a low-pitched fog signal operated by compressed air, characterized by the “grunt” that ends each note. Origin: early 20th century: from Greek dia 'through' + phōnē 'sound'diaphone in other Oxford dictionaries Definition of diaphone in the British & World English dictionary
