lexicology Syllabification: (lex·i·col·o·gy)Pronunciation: /ˌleksəˈkäləjē/Definition of lexicology noun the study of the form, meaning, and use of words. Derivatives lexicologicalPronunciation: /-kəˈläjikəl/ adjective lexicologicallyPronunciation: /-kəˈläjik(ə)lē/ adverb lexicology in other Oxford dictionaries Definition of lexicology in the British & World English dictionary