polychroite

from The Century Dictionary.

• noun The coloring matter of saffron: so named in consequence of the variety of colors which it exhibits when acted upon by various reagents.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) The coloring matter of saffron; -- formerly so called because of the change of color on treatment with certain acids; -- called also crocin, and safranin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry The coloring matter of saffron; -- formerly so called because of the change of color on treatment with certain acids; -- called also crocin, and safranin.