n. The state or character of being susceptible; the capability of receiving impressions or change, or of being influenced or affected; sensitiveness.n. Capacity for feeling or emotion of any kind; sensibility: often in the plural.n. Specifically, a special tendency to experience emotion; peculiar mental sensitiveness.n. In medicine, an unusual predisposition toward infection or the attacks of infectious disease.n. In electricity, the ratio of the magnetization produced in a specimen of iron, or other material, to the magnetizing force.