pro·tein 
/ˈproʊˌti:n/ noun
plural pro·teins /ˈproʊˌti:n/ noun : a substance found in foods (such as meat, milk, eggs, and beans) that is an important part of the human diet [noncount] ▪ You need more protein in your diet. ▪ These foods are an excellent source of protein. [count] ▪ These foods have all of the essential proteins.
