Meanings
nouncystine (countable and uncountable, plural cystines)
plural cystines
- countableuncountablebiochemistryA nonessential amino acid formed by the oxidation of cysteine; it contains two cysteine residues linked by a disulfide bond.
Synonyms: E921 when used as an improving agent
Synonyms & antonyms
nounA nonessential amino acid formed by the oxidation of cysteine; it contains two cysteine residues linked by a disulfide bond.
Similar
E921 when used as an improving agent
Origin
- Ancient Greekκύστις“bladder”
- Englishcystine
From Ancient Greek κύστις (kústis, “bladder”), where it was found.
More words from Ancient Greek
Full word history & related roots →Translations
Bulgarian цистин
- цистин (cistin)a nonessential amino acid
Chinese Mandarin 胱氨酸
- 胱氨酸 (guāngānsuān)a nonessential amino acid
Esperanto cistino
- cistinoa nonessential amino acid
French cystine
- cystinea nonessential amino acid
German Cystin
- Cystina nonessential amino acid
Italian cistina
- cistinaa nonessential amino acid
Polish cystyna
- cystynaa nonessential amino acid
Slovak cystín
- cystína nonessential amino acid
Spanish cistina
- cistinaa nonessential amino acid
Rhymes & wordplay
Rhymes with cystine
All rhymes →Sounds the same
cysteine (one pronunciation)Sistine
Anagrams
Cite this entry
APA
cystine. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/cystine
MLA
“cystine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cystine. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “cystine,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/cystine.
Source: cystine on Wiktionary, CC BY-SA 4.0.