Word.ws English Dictionary

Plural of cysteine

regular plural

The plural of cysteine is cysteines.

Forms of cysteine

Singularcysteine /ˈsɪs.təˌiːn/
Pluralcysteines
Countablecountable and uncountable

Cysteines in a sentence

  • A variety of biselectrophilic molecules were used to cross-link two properly aligned cysteines, with the aim of stabilizing the helical conformation.2015 June 26, Marta Pelay-Gimeno et al., “Structure-Based Design of Inhibitors of Protein–Protein Interactions: Mimicking Peptide Binding…. From the entry biselectrophilic

Meaning of cysteine

  1. noun A sulphur-containing nonessential amino acid C₃H₇NO₂S found in most animal proteins; it readily oxidizes to cystine.

Full definition of cysteine

Questions about the plural of cysteine

What is the plural of cysteine?
The plural of cysteine is cysteines.
Is cysteine countable?
Cysteine is a countable and uncountable noun.

Source and license

Adapted from Wiktionary: cysteine (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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