pro‧tein /ˈprəʊtiːn $ ˈproʊ-/ noun [uncountable and countable]
[Date: 1800-1900; Language: French; Origin: protéine, from Greek protos 'first']
one of several natural substances that exist in food such as meat, eggs, and beans, and which your body needs in order to grow and remain strong and healthy

[TahlilGaran] Dictionary of Contemporary English ▲

protein
noun
ADJ. essential | natural | animal, vegetable
VERB + PROTEIN be high/rich in, contain, supply Cereals supply essential protein and vitamins.
produce
PROTEIN + NOUN content | intake | deficiency
PHRASES a high/low protein diet, a source of protein

[TahlilGaran] Collocations Dictionary ▲