cystine Meaning, Definition & Usage

  1. noun a crystalline amino acid found in proteins (especially keratin); discovered in bladder stones

WordNet

Cyst"ine noun
Etymology
See Cyst.
Definitions
  1. (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.

Webster 1913