Polychroite \Pol"y*chro*ite\, n. [Poly- + Gr. ? color: cf. F. polychro["i]te.] (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}. [1913 Webster]
Crocin \Cro"cin\ (kr?"s?n), n. [Gr. ???? saffron.] (Chem.) (a) The coloring matter of Chinese yellow pods, the fruit of {Gardenia grandiflora}. --Watts. (b) A red powder (called also {polychroite}), which is made from the saffron ({Crocus sativus}). See {Polychroite}. [1913 Webster]