[rel-uh
k-tiv-i-tee] 
| the tendency of a magnetic circuit to conduct magnetic flux, equal to the reciprocal of the permeability of the circuit. |
| rel·uc·tiv·i·ty (rěl'ək-tĭv'ĭ-tē) n. A measure of the resistance of a material to the establishment of a magnetic field within it, equal to the ratio of the intensity of the magnetic field to the magnetic induction of the material. [Blend of reluct(ance) and (conduct)ivity.] |