Rhodizonic \Rho`di*zon"ic\, a. [Gr. ??? to be rose-red.] (Chem.)
Pertaining to, or designating, a colorless crystalline
substance (called rhodizonic acid, and carboxylic acid)
obtained from potassium carboxide and from certain quinones.
It forms brilliant red, yellow, and purple salts.
[1913 Webster]