cadmic,a.|ˈkædmɪk| [f. cadm-ium + -ic.] 1.Chem. Of cadmium: as in cadmic oxide, etc. 1873Williamson Chem. 173 Cadmic sulphide is a beautiful yellow compound. 2. Of cadmia, cadmean. 1873A. W. Ward tr.Curtius' Greece I. i. iii. 91 The earth used for the refinement of copper was called Cadmic earth.