connective Syllabification: (con·nec·tive)Pronunciation: /kəˈnektiv/Definition of connective adjective connecting:connective words and phrases noun something that connects, in particular. Grammar a word or phrase whose function is to link linguistic units together. Zoology a bundle of nerve fibers connecting two nerve centers or ganglia, especially in invertebrate animals. GrammarA sentence adverbial, an adjunct, or a conjunct.connective in other Oxford dictionaries Definition of connective in the British & World English dictionary