Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
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.
Definition source: English Wiktionary via Wiktextract
Usage: countable
Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
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.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Qualifier: nutrition
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A food rich in protein, often a meat or meat substitute.
Definition source: English Wiktionary via Wiktextract
Usage: countable
Qualifier: nutrition
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes
Definition source: Princeton WordNet 3.0
Synonyms: none provided
Antonyms: none provided
Broader terms: macromolecule, supermolecule
Narrower terms: capsid, gluten, recombinant protein, actomyosin, aleurone, amyloid, apoenzyme, conjugated protein, compound protein, enzyme, fibrin, filaggrin, growth factor, haptoglobin, iodoprotein, iodinated protein, nucleoprotein, opsin, phosphoprotein, plasma protein, prostate specific antigen, PSA, proteome, simple protein, cytokine, ferritin, antibody
History
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”).
Across languages
161 source translations are retained for this English entry.
