Medical Dictionary


noun ca·sein \ˈkā-ˌsēn, ka-ˈsēn\

Medical Definition of CASEIN

:  any of several phosphoproteins of milk: as a :  one that occurs as a colloidal suspension in milk—called also caseinogen b :  one that is produced when milk is curdled by rennet, is the chief constituent of cheese, and is used in making plastics—called also paracasein


How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears