tyrosine

noun

ty·​ro·​sine ˈtī-rə-ˌsēn How to pronounce tyrosine (audio)
: a phenolic amino acid C9H11NO3 that is a precursor of several important substances (such as epinephrine and melanin)

Examples of tyrosine in a Sentence

Recent Examples on the Web Physicians had indeed moved their patients over to one of the newer tyrosine kinase inhibitors like Tasigna. WIRED, 4 Sep. 2023 One way is to eat foods that are high in tyrosine, such as avocados, bananas, and dark chocolate. Amber Smith, Discover Magazine, 22 Dec. 2022 There’s potential to raise dopamine levels from foods that are high in tyrosine. Allison Futterman, Discover Magazine, 10 May 2022 This change results in person's bone marrow making a specific protein called tyrosine kinase, which causes too many stem cells to become white blood cells—and, as with other types of leukemia, those extra abnormal blood cells build up, leaving less room for healthy blood cells. Barbara Brody, Health.com, 30 Sep. 2021 In addition, protein-rich foods, like eggs and Greek yogurt, contain tyrosine and may enhance cognitive performance and even creativity, studies show. Caitlin Carlson, Women's Health, 24 Mar. 2023 You may then be given tyrosine kinase inhibitors (TKIs), targeted therapy drugs that send signals to the cells to stop that growth. Gagandeep Brar, Verywell Health, 19 Mar. 2023 There is 200 mg of tyrosine, which is best known as a mood enhancer and cognitive enhancer. Matt Cooper, Discover Magazine, 21 Oct. 2022 Hunter Focus leverages amino acid compounds like L-theanine, citicoline, and L-tyrosine to enhance focus and mental concentration. Dallas News, 23 Aug. 2022 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'tyrosine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

International Scientific Vocabulary, irregular from Greek tyros cheese — more at butter

First Known Use

1857, in the meaning defined above

Time Traveler
The first known use of tyrosine was in 1857

Dictionary Entries Near tyrosine

Cite this Entry

“Tyrosine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tyrosine. Accessed 1 Oct. 2023.

Medical Definition

tyrosine

noun
ty·​ro·​sine ˈtī-rə-ˌsēn How to pronounce tyrosine (audio)
: a phenolic amino acid C9H11NO3 that is a precursor of several important substances (as epinephrine and melanin)
abbreviation Tyr

More from Merriam-Webster on tyrosine

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