(physics, electrical engineering) A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.

plural of directness

plural of directional

Able to be directed.

plural of directivity

comparative form of direct: more direct

Archaic form of director.

Indicating direction. / Of or relating to guidance or help.

An instruction or guideline that indicates how to perform an action or reach a goal.

That which directs; serving to direct, indicate, or guide. / (grammar) Relating to the directive case.