Definition of casein
: a phosphoprotein of milk: such 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
Our Reviews team has selected the best protein bars.
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
You're (Probably) Saying It Wrong
18 words even you might be mispronouncing
Great Big List of Beautiful & Useless Words
Along with their degrees of usefulness
12 French Phrases from Downton Abbey
Many of us have an 'idée fixe'
Rare and Amusing Insults, Volume 2
Sometimes a 'cacafuego' can be a real 'slubberdeg...
Ask the Editors