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.