1. An elastic deformation produced by an electric field, independent of the polarity of the field.
2. A description of an acoustic tool in which its operation is based on the energy produced by the change in dimensions of an electrostrictive material; such as, barium titinate.

1. The classic deforming of a dielectric material when it is stressed by an electric field.
2. A form of elastic deformation of a dielectric induced by an electric field, associated with those components of strain that are independent of reversal of field direction, in contrast to the piezoelectric effect.
3. The change in dimensions which occurs in some dielectric materials when they are placed in an electric field.
4. An activity similar to piezoelectricity, but electrostrictive ceramics expand according to the square of the voltage whereas piezoelectric materials expand linearly.

Electrostrictive materials present less hysteresis (delayed response) than piezoelectric materials, but they are difficult to use at very low voltages.

The elastic deformation of a dielectric by an electrostatic field.

A relay the operation of which is produced by an electrostrictive-dielectric actuator.