casein
UK[ˈkeɪsiːɪn]US[ˈkeɪsiːn]
n
the main protein present in milk and cheese.
Morpheme Breakdown
case
in
case
cheese
in
chemical suffix
Etymology
the word casein is a modern scientific formation derived from the latin root for cheese, 'caseus'. the suffix '-in', commonly used in biochemistry since the 19th century, denotes a neutral chemical substance, particularly a protein or glyceride. thus, the term literally translates to "the protein from cheese," directly reflecting its primary source and chemical nature. this etymological path clearly links the ancient, everyday substance of cheese to its specific protein component identified by modern science.
Analysis
Structure: case (cheese) + in (chemical suffix)
case from latin 'caseus' (cheese). in a suffix used in chemistry to form names of substances, especially proteins or chemical compounds.
Examples
casein is often used as a binding agent in processed foods.
some people have an allergy to the casein found in dairy products.
the painter mixed casein-based paints for the mural.