The Collaborative International Dictionary of English v.0.48:
Passible \Pas"si*ble\, a. [L. passibilis, fr. pati, to suffer: cf. F. passible. See Passion.] Susceptible of feeling or suffering, or of impressions from external agents. [1913 Webster] Apolinarius, which held even deity itself passible. --Hooker. [1913 Webster]