serine
/ˈsɪə(ɹ)iːn/
serine noun: a nonessential amino acid, CH₂OH.CH(NH₂)COOH, found in most animal proteins, notably silk.

Noun
serine (countable and uncountable, plural serines)
- A nonessential amino acid, CH₂OH.CH(NH₂)COOH, found in most animal proteins, notably silk.
Forms of serine
| plural | serines |
|---|
Origin of serine
From Latin sericus (“silken”). The compound was first obtained from silk protein, a particularly rich source, in 1865. See also serge.
Words formed from serine
Questions about serine
- What does serine mean?
- Serine means a nonessential amino acid, CH₂OH.CH(NH₂)COOH, found in most animal proteins, notably silk.
- What part of speech is serine?
- Serine is a noun.
- How do you pronounce serine?
- Serine is pronounced /ˈsɪə(ɹ)iːn/.
- What is the plural of serine?
- The plural of serine is serines.
Words near serine in the dictionary
Source and license
Adapted from Wiktionary: serine (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Tesco250-serine.wav.
Cite this entry: “serine.” Word.ws, https://word.ws/serine. Based on Wiktionary, CC BY-SA 4.0.
