The definition of a protein is a substance that has amino acids, compounds and carbon, hydrogen, oxygen, nitrogen and sometimes sulfur and is found in many foods.(noun)
An example of a protein is the type of nutrient found in meats.
See protein in Webster's New World College Dictionary
Origin: Ger < Fr protéine < Gr prōteios, prime, chief < prōtos, first (see proto-): from being a chief constituent of plant and animal bodies
See protein in American Heritage Dictionary 4
Origin: French protéine
Origin: , from Late Greek prōteios, of the first quality
Origin: , from Greek prōtos, first; see per1 in Indo-European roots.
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