[sus.cep.ti.bil.i.ty] n, pl -ties (1644) 1: the quality or state of being susceptible; esp: lack of ability to resist some extraneous agent (as a pathogen or drug): sensitivity
2. a: a susceptible temperament or constitution b pl: feelings, sensibilities 3 a: the ratio of the magnetization in a substance to the corresponding magnetizing force b: the ratio of the electric polarization to the electric intensity in a polarized dielectric