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Webster 1913 Edition

(s?s′t?n; 104)

Noun.

[See

(Physiol. Chem.)

A white crystalline substance,

C3H7NSO2

, containing sulphur, occuring as a constituent of certain rare urinary calculi, and occasionally found as a sediment in urine.

See also: cystine

Cystine n

See also: Cystine

cystine ‎(countable and uncountable, plural cystines)

(chemistry) a nonessential amino acid formed by the oxidation of cysteine; it contains two cycteine residues linked by a disulfide bond

a nonessential amino acid