What does "cysteine" mean?

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

What is a synonym for "cysteine"?

Common synonyms include: cysteinyl, glutathione precursor, thiol-containing amino acid.

Pronounced //ˈsɪs.təˌiːn//.

/ˈsɪs.təˌiːn/ noun

noun ·Rare ·Advanced level

Noun

1
A sulphur-containing nonessential amino acid C₃H₇NO₂S found in most animal proteins; it readily oxidizes to cystine. countable, uncountable
2
an amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine wordnet

An alteration of cystine, see -eine.