\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}.