tyrosine
noun
ty·ro·sine
ˈtī-rə-ˌsēn 
: a phenolic amino acid C9H11NO3 that is a precursor of several important substances (such as epinephrine and melanin)
Examples of tyrosine in a Sentence
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The team found prenatal phthalate levels were associated with lower levels of tyrosine, an amino acid and precursor to the thyroid hormone thyroxine.
—
Kristen Rogers, CNN Money, 2 Apr. 2025
For example, tyrosine is needed for the production of thyroid hormones.
—Fiona Embleton, Glamour, 14 Mar. 2025
Diets rich in tyrosine naturally increase dopamine.
—Allison Futterman, Discover Magazine, 15 Feb. 2025
Taking tyrosine with a thyroid replacement drug may increase thyroid hormone levels.
—Trang Tran, Pharmd, Verywell Health, 18 Oct. 2024
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Kristen Rogers, CNN Money, 2 Apr. 2025
For example, tyrosine is needed for the production of thyroid hormones.
—Fiona Embleton, Glamour, 14 Mar. 2025
Diets rich in tyrosine naturally increase dopamine.
—Allison Futterman, Discover Magazine, 15 Feb. 2025
Taking tyrosine with a thyroid replacement drug may increase thyroid hormone levels.
—Trang Tran, Pharmd, Verywell Health, 18 Oct. 2024
See All Example Sentences for tyrosine
Cite this Entry
“Tyrosine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tyrosine. Accessed 14 Apr. 2025.
Copy CitationMedical Definition
tyrosine
noun
ty·ro·sine
ˈtī-rə-ˌsēn
: a phenolic amino acid C9H11NO3 that is a precursor of several important substances (as epinephrine and melanin)
—abbreviation Tyr
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