quantitate Syllabification: (quan·ti·tate)Pronunciation: /ˈkwäntəˌtāt/Definition of quantitate verb [with object] Medicine & Biology determine the quantity or extent of (something in numerical terms); quantify. Derivatives quantitationPronunciation: /ˌkwäntəˈtāSHən/ noun Origin: 1960s: from quantity + -ate3quantitate in other Oxford dictionaries Definition of quantitate in the British & World English dictionary