misdial Syllabification: (mis·di·al)Pronunciation: /ˌmisˈdī(ə)l/Definition of misdial verb (misdials, misdialing, misdialed ; Britishmisdials, misdialling, misdialled) [no object] dial a telephone number incorrectly. noun an act of dialing a number incorrectly. misdial in other Oxford dictionaries Definition of misdial in the British & World English dictionary