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Word of the Day Wednesday, June 10, 2026

peptone

/pɛptəʊn/ noun · British & US
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What does peptone mean?

noun

A water-soluble, nitrogenous compound derived from the digestion of proteins, used as a nutrient in microbiology and as an ingredient in some foods.

Example

"The bacterium was grown in a medium containing peptone as a source of nitrogen."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymologically related

Synonyms for peptone

Rhymes with peptone