Chem. [f. L. aur-um gold + -IN.] A red coloring matter produced (by Kolbe and Schmidt in 1861) by heating phenol with oxalic acid and strong sulphuric acid.
1869. Eng. Mech., 19 March, 586/3. Rosolic acid, or aurine … from coaltar.
1883. Athenæum, 10 March, 316/2. Aurin.
