| 1. — the polarization of an elliptically polarized wave or circularly polarized wave for which the electric field strength vector at a given point in space rotates in the same plane and in an opposite sense to that of a reference elliptically polarized wave of the same direction of propagation, the axial ratios of both polarization ellipses being the same and their major axes at right angles.
2. — the polarization of a linearly polarized wave for which the electric field strength vector at a given point in space is normal to that of a reference linearly polarized wave of different or same direction of propagation
NOTE – The term "orthogonal polarization" or "cross-polarization" is also used to describe the state of two electromagnetic waves which show mutually orthogonal polarizations at a given point in space.
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