Meaning of dielectric strength

di'elec'tric strength'

Pronunciation: [key]
— Elect. Elect.
  1. the maximum voltage that can be applied to a given material without causing it to break down, usually expressed in volts or kilovolts per unit of thickness. Cf. breakdown voltage.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.