protein
nounUK /ˈprəʊ.tiːn/
US /ˈproʊ.tiːn/
Protein is a thing in food that helps your body grow strong.
Eggs are full of protein.
RELATED WORDS
OTHER MEANINGS
2. A large molecule made of amino acids that does important jobs in living things.
Hemoglobin is a protein that carries oxygen in your blood.
3. Foods that contain a lot of protein, such as meat, eggs, or beans.
The doctor said to eat more protein at every meal.
4. A substance in the body that builds and repairs tissues.
Your hair and nails are made of a protein called keratin.