protein
//ˈpɹəʊ.ti.ɪn//
Forms
- Plural
- proteins
Definitions
1.Any of numerous large, complex naturally-produced molecules composed of one or more long chains of amino acids, in which the amino acid groups are held together by peptide bonds.
- Proteins carry out the bulk of cellular functions, including relaying signals, providing structural support, and accelerating biochemical reactions.
2.One of three major classes of food or source of food energy (4 kcal/gram) abundant in animal-derived foods (meat) and some vegetables, such as legumes.
- Along with carbohydrates and fat, protein is one of the three main macronutrients that make up our diet. Furthermore, it is the only macronutrient that supplies us with amino acids, making it essential for survival.
3.A food rich in protein, often a meat or meat substitute.
- The preparation style should be the same for both proteins so that the side dishes compliment the meal.
Frequency
Overall
Uncommon· #2263
By learning goal
- Everyday conversation
- Rare
- General reading & writing
- Uncommon
- Academic
- Rare
- Literature
- Rare
Etymology
From proto- + -ein.
Suggested by Jöns Jacob Berzelius in a letter to Gerardus Johannes Mulder, from French protéine and German Protein, both coined based on Ancient Greek πρωτεῖος (prōteîos, “primary”), from πρῶτος (prôtos, “first”).