ser·​ine | \ ˈser-ˌēn How to pronounce serine (audio) \

Definition of serine

: a crystalline nonessential amino acid C3H7NO3 that occurs as a residue in many proteins

Examples of serine in a Sentence

Recent Examples on the Web Although the researchers knew that this individuality resulted both from how tightly each cell regulated tumbling and from its response to L-serine, quantifying this variation in specific cells was more challenging. Quanta Magazine, "Bacterial Clones Show Surprising Individuality," 4 Sep. 2019 The curling formula not only locks your lashes into place for up to 12 hours, but also packs a nourishing dose of pro-vitamin B5 and serine for conditioning benefits. Braelyn Wood,, "This Hourglass Mascara is Part of Emilia Clarke’s Trick to Getting Long, Voluminous Lashes," 10 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'serine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of serine

1880, in the meaning defined above

History and Etymology for serine

International Scientific Vocabulary sericin + -ine entry 2

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Time Traveler for serine

Time Traveler

The first known use of serine was in 1880

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Statistics for serine

Cite this Entry

“Serine.” Dictionary, Merriam-Webster, Accessed 10 Aug. 2020.

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More Definitions for serine


ser·​ine | \ ˈse(ə)r-ˌēn How to pronounce serine (audio) \

Medical Definition of serine

: a nonessential amino acid C3H7NO3 that occurs especially as a structural part of many proteins and phosphatidylethanolamines and is a precursor of glycine abbreviation Ser

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