serine

American

[ser-een, -in, seer-] / ˈsɛr in, -ɪn, ˈsɪər- /

noun

Biochemistry.

a crystalline amino acid, HOCH 2 CH(NH2 )COOH, found in many proteins and obtained by the hydrolysis of sericin, the protein constituting silk gum. Ser; S

serine British

/ ˈsɪəriːn, ˈsɛriːn, -rɪn /

noun

a sweet-tasting amino acid that is synthesized in the body and is involved in the synthesis of cysteine; 2-amino-3-hydroxypropanoic acid. Formula: CH 2 (OH)CH(NH 2 )COOH

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

serine Scientific

/ sĕr′ēn′ /

A nonessential amino acid. Chemical formula: C ₃ H ₇ NO ₃ .
See more at amino acid

Etymology

Origin of serine

First recorded in 1875–80; ser(um) + -ine ²

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

serine

Recently, researchers cloned and expressed another rattlesnake serine protease known as cholinein-1.

From Science Daily ● Nov. 18, 2025

When serine levels were low, hair growth slowed because it requires significant energy.

From Science Daily ● Nov. 7, 2025

However, it remained unclear how reducing serine might affect healthy tissue.

From Science Daily ● Nov. 7, 2025

In the skin, this stress response is tied to the amino acid serine, a non-essential nutrient found in common foods like meat, grains, and milk.

From Science Daily ● Nov. 7, 2025

Next, the researchers plan to investigate whether wound healing can be improved by lowering serine intake or by using medications that influence serine levels or the ISR pathway.

From Science Daily ● Nov. 7, 2025

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023