protein
pro·tein [protein proteins] BrE [ˈprəʊtiːn] NAmE [ˈproʊtiːn] noun countable, uncountable
a natural substance found in meat, eggs, fish, some vegetables, etc. There are many different proteins and they are an essential part of what humans and animals eat to help them grow and stay healthy
•essential proteins and vitamins
•protein deficiency
•Peas, beans and lentils are a good source of vegetable protein.
Word Origin:
mid 19th cent.: from French protéine, German Protein, from Greek prōteios ‘primary’, from prōtos ‘first’.
Example Bank:
•Gluten is a protein found in wheat and other grains.
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