a. [f. Gr. ἀμφί both + -χρο-ος colored (f. χρό-α, χρο-ιά color) + -IC. (In l. c. erroneously printed amphicroitic.)] Having a double action upon test colors in chemistry.
1876. M. Foster, Phys. (1879), I. ii. 63. A living muscle at rest tested by litmus paper is frequently amphicroitic, i.e. it will turn blue litmus red and red litmus blue.