dialectology Syllabification: (di·a·lec·tol·o·gy)Pronunciation: /ˌdīəlekˈtäləjē/Definition of dialectology noun the branch of linguistics concerned with the study of dialects. Derivatives dialectologicalPronunciation: /-təˈläjikəl/ adjective dialectologistPronunciation: /-jist/ noun dialectology in other Oxford dictionaries Definition of dialectology in the British & World English dictionary