Main Entry:

ca·sein

Pronunciation:

\ˈkā-ˌsēn, kā-ˈ\

Function:

noun

Etymology:

probably from French caséine, from Latin caseus cheese

Date:

1841

: a phosphoprotein of milk: as a: one that is precipitated from milk by heating with an acid or by the action of lactic acid in souring and is used in making paints and adhesives b: one that is produced when milk is curdled by rennet, is the chief constituent of cheese, and is used in making plastics