corticinChem.|ˈkɔːtɪsɪn| [f. L. cortic-em bark + -in.] An amorphous yellowish substance, found by Braconnot in the bark of the aspen. 1863–72Watts Dict.Chem. II. 86 Corticin..is tasteless and inodorous, sparingly soluble in water, easily in alcohol and acetic acid.