: a sweet crystalline amino acid C2H5NO2 obtained especially by hydrolysis of proteins
Examples of glycine in a Sentence
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Your liver relies on amino acids from protein — like glycine, cysteine and glutamate — to make glutathione, your body’s master antioxidant.
—
Lauren Mallers, Sacbee.com, 8 Oct. 2025
The amino acid complex itself is designed to repair damage and prevent future irritation and redness with three amino acids—taurine, arginine, and glycine—and finding the most effective percentage of each ingredient in the mix took more than 100 rounds of testing to perfect.
—Megan McIntyre, Allure, 16 Sep. 2025
Integral in this process is L-arginine:glycine amidinotransferase (AGAT), a key enzyme in creatine biosynthesis.
—New Atlas, 23 July 2025
When taken as a sleep supplement, glycine helps support sleep quality and efficiency, promoting restful sleep.7
7.
—Ayesha Gulzar, Verywell Health, 21 July 2025
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Lauren Mallers, Sacbee.com, 8 Oct. 2025
The amino acid complex itself is designed to repair damage and prevent future irritation and redness with three amino acids—taurine, arginine, and glycine—and finding the most effective percentage of each ingredient in the mix took more than 100 rounds of testing to perfect.
—Megan McIntyre, Allure, 16 Sep. 2025
Integral in this process is L-arginine:glycine amidinotransferase (AGAT), a key enzyme in creatine biosynthesis.
—New Atlas, 23 July 2025
When taken as a sleep supplement, glycine helps support sleep quality and efficiency, promoting restful sleep.7
7.
—Ayesha Gulzar, Verywell Health, 21 July 2025
See All Example Sentences for glycine
Cite this Entry
“Glycine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glycine. Accessed 21 Oct. 2025.
Copy CitationMedical Definition
: a sweet crystalline nonessential amino acid C2H5NO2 that is a neurotransmitter which induces inhibition of postsynaptic neurons, is obtained by hydrolysis of proteins or is prepared synthetically, and is used in the form of its salt as an antacid or in aqueous solution as an irrigating fluid in transurethral surgery
—abbreviation Gly
called also aminoacetic acid, glycocoll
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