allosteric Syllabification: (al·lo·ster·ic)Pronunciation: /ˌaləˈsterik, -ˈsti(ə)r-/Definition of allosteric adjective Biochemistry relating to or denoting the alteration of the activity of a protein through the binding of an effector molecule at a specific site. allosteric in other Oxford dictionaries Definition of allosteric in the British & World English dictionary