(algebraic geometry) The direction aligned with the z-axis of a coordinate system.

(algebraic geometry) The direction aligned with the x-axis of a coordinate system.

(algebraic geometry) The direction aligned with the y-axis of a coordinate system.

An instruction given to an actor that tells the actor what should be done and in what manner to do it.

Misspelling of unidirectional.

The ability of a vehicle to maintain its course, or remain under normal steering control, while subjected to directionally disturbing influences such as cross-winds, braking on irregular surfaces or turning.

plural of co-direction

Alternative spelling of bidirectional

The condition of being self-directed.

Alternative spelling of multidirectional