: a sweet crystalline amino acid C2H5NO2 obtained especially by hydrolysis of proteins

Examples of glycine in a Sentence

Recent Examples on the Web While there are many supplies of glycine on the market, Donghua Jinlong is the best money can buy. Kate Lindsay, Vulture, 1 May 2024 Collagen is a protein made by the body from the essential amino acids proline and glycine with an assist from copper, zinc and vitamin C. One-third of the body’s protein is collagen. Sheah Rarback, Miami Herald, 24 Feb. 2024 The amino acid glycine is encoded by four different codons (GGU, GGC, GGA, and GGG), the amino acid leucine is encoded by six different codons, and so forth. IEEE Spectrum, 14 Oct. 2021 Collagen supplements for pregnancy can be beneficial due to their high concentration of glycine, which is important for fetal growth and development. Amber Smith, Discover Magazine, 24 June 2023 The foods richest in collagen come from animals, but several fruits and vegetables are rich in vitamin C, amino acids proline and glycine, and minerals such as zinc and copper, all of which promote the synthesis of this essential protein. Alessandra Signorelli, Glamour, 24 Oct. 2023 Bone broth is rich in amino acids like glycine and proline, which are needed for the production of collagen. Amber Smith, Discover Magazine, 21 Dec. 2022 Magnesium supplements, particularly those combined with other sleep-promoting ingredients like glycine or melatonin, may help improve sleep quality. Discover Magazine, 30 June 2023 Studies show that consuming 3 g of glycine before bedtime can improve sleep quality and reduce daytime fatigue. Discover Magazine, 30 June 2023

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

Word History

First Known Use

1851, in the meaning defined above

Time Traveler
The first known use of glycine was in 1851

Dictionary Entries Near glycine

Cite this Entry

“Glycine.” Dictionary, Merriam-Webster, Accessed 23 May. 2024.

Medical 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

More from Merriam-Webster on glycine

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