Path. [a. Gr. κυάνωσις dark blue color, f. κύανος a dark-blue mineral; see -OSIS.] Blueness or lividness of the skin owing to the circulation of imperfectly oxygenated blood (esp. as caused by congenital malformation of the heart); blue disease, blue jaundice.
1834. Good, Study Med. (ed. 4), II. 669, note. Obstruction … may likewise bring on Cyania, or as it is more frequently named Cyanosis.
1851. S. Judd, Margaret, II. ii. (1871), 193. His love for me produces a cyanosis.
1876. trans. Wagner’s Gen. Pathol., 336. Constant cyanosis of the mucous membranes.
