Operating or moving or allowing movement in one direction only.
operating or moving or allowing movement in one direction only; "a unidirectonal flow"; "a unidirectional antenna"; "a unidirectional approach to a problem"
operating or moving or allowing movement in one direction only; "a unidirectional flow"; "a unidirectional antenna"; "a unidirectional approach to a problem"
operating or moving or allowing movement in one direction only
