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casein (n.)[casein 词源字典]: principal protein-constituent of milk, forming the basis of cheese, 1841, from French caséine, from Latin caseus "cheese" (see cheese (n.1)) + chemical suffix -ine (2).[casein etymology, casein origin, 英语词源]
caseinate: "Casein in colloidal form bound to calcium or other ions", Mid 19th cent.; earliest use found in Repertory Patent Inventions. After German Caseinat.