Chem. Also -in. [mod. f. Gr. κύστις bladder + -INE.] An organic base, C3 NHO7 SO2, a yellowish crystalline substance, found in a rare kind of urinary calculus.
1843. Jones, in Trans. Med.-Chirurg. Soc., XXVI. 110. The layers exterior to this nucleus contained no cystine.
attrib. 1853. G. Bird, Urin. Deposits (ed. 4), vii. 187. The specific gravity of cystine urine is generally below the average.
1885. W. Roberts, Urin. & Renal Dis. (ed. 4), I. iii. 89. The following case of cystine calculus … occurred in the Manchester Infirmary.
Hence Cystinuria, the condition of body in which cystine is found in the urine.
1853. G. Bird, Urin. Deposits, vii. 193.
