Unidirectional vs. Bidirectional

Unidirectionaladjective

Pertaining to only one direction, e.g.: where all component parts are aligned in the same direction in space.

Bidirectionaladjective

Moving in two directions (usually opposite)

Unidirectionalnoun

A fabric in which the majority of fibres run in the same single direction.

Bidirectionaladjective

Operating or functioning in two directions (usually opposite)

Unidirectionaladjective

operating or moving or allowing movement in one direction only;

‘a unidirectional flow’; ‘a unidirectional antenna’; ‘a unidirectional approach to a problem’;

Bidirectionalnoun

Such an antenna or microphone

Bidirectionaladjective

reactive or functioning or allowing movement in two usually opposite directions