Meaning & Definition of word "Protein"

Protein

/ˈproʊtiːn/

1. A large, complex molecule composed of one or more long chains of amino acids and essential for the structure, function, and regulation of the body's tissues and organs.
- Example: Milk is a rich source of protein, essential for muscle repair and growth.
2. Any of a large group of naturally occurring molecules that are essential for life and are made up of one or more chains of amino acids.
- Example: Proteins play a crucial role in biological processes, including enzyme functions and cellular structure.
3. A dietary component that supplies the body with essential amino acids.
- Example: Athletes often increase their intake of protein to help build muscle mass.
4. A specific type of protein that carries out a particular function in a biological process.
- Example: Hemoglobin is a protein in red blood cells that transports oxygen throughout the body.

From the Greek 'protos', meaning 'first', as proteins were considered the first essential nutrients.

complete protein:

A protein that contains all essential amino acids.

protein shake:

A drink made with protein powder, often consumed post-exercise.

high-protein diet:

A diet that emphasizes protein intake for weight loss or muscle gain.

amino acids:

Organic compounds that combine to form proteins.

enzyme:

A type of protein that acts as a catalyst in biochemical reactions.

peptide:

A short chain of amino acids.

Meaning: Protein powder.

Example Sentence: I just bought some whey for my post-workout protein fix.

Meaning: Muscle mass.

Example Sentence: He's been lifting weights and packing on the protein.