The Collaborative International Dictionary of English v.0.48:
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]
The Collaborative International Dictionary of English v.0.48:
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]