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1. Any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes
   "a diet high in protein"

Derived forms: proteins

Type of: macromolecule, supermolecule

Part of: egg, eggs, legume, meat, milk

Encyclopedia: Protein