[=i]'sa-tin, n. a substance capable of being crystallised, obtained by oxidising indigo.--adj. ISAT'IC.--n. I'S[=A]TIS, a genus of Cruciferæ.--Isatis tinctoria, woad. [Gr. isatis, woad.]
[Gr.] A yellow crystalline substance obtained by the oxidation of indigo.
