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protein

From Wiktionary

Pronunciation

[change]
  • (UK) IPA (key): /ˈprəʊti.ɪn/ or /ˈprəʊtiːn/
  • (US) IPA (key): /ˈproʊtiːn/
  • (file)

Noun

[change]

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.