quantitateEnglishOxford New American Dictionaryquantitate /ˈkwän(t)əˌtāt, ˈkwɑn(t)əˌteɪt / ▸ verb [with object] Medicine & Biology determine the quantity or extent of (something in numerical terms); quantify: damage to the target cells was quantitated by fluorescence microscopy. – DERIVATIVES quantitation /ˌkwäntəˈtāSHən/ noun– ORIGIN 1960s : from quantity + -ate3.