The ability of a dielectric material to withstand high voltages without breaking down; expressed as the highest voltage required per millimeter of material thickness before a breakdown occurs: The dielectric strength is the maximum electrical potential gradient that a material can withstand without rupture; usually specified, in volts per millimeter of thickness.

The ability to maintain various functions: The primary ego strength is to perceive reality and to adapt to it.

1. That which is stronger, more powerful, or more intense than others of its kind: "Henry claimed that he was wearing industrial-strength shoes."
2. A reference to a commercial product, very strong, powerful, or durable compared to other products of the same type.