protein

Pronunciation

• (UK) IPA ^(key): /ˈprəʊti.ɪn/ or /ˈprəʊtiːn/
• (US) IPA ^(key): /ˈproʊtiːn/

• Audio (US)

  (file)

Noun

Singular protein

Plural proteins

1. (uncountable) Protein is a natural substances in food such as meat, milk, and beans.

   Dr. Lecter told me that if I ate more protein, it would help me get bigger and stronger.

   He told me that foods like milk, eggs, fish, and beans have a lot of protein in them.

2. (countable) A protein is a molecule that all cells need to live. Plants, animals, and humans all need proteins. Proteins are made of many of the most important things we need to live.

   When a person's body makes proteins that are the wrong shape, it can cause problems like Alzheimer's Disease.