unidirectional

adjective
UK /ˌjuːnɪdaɪˈrekʃənl/
US /ˌjuːnɪdaɪˈrekʃənl/

Going only one way and not back the other way.

The bridge has a unidirectional flow of traffic during rush hour.


OTHER MEANINGS

2. Operating or moving in a single direction only, as a signal or current.

The circuit uses a unidirectional diode to block reverse current.

3. Involving communication or influence that travels from one party to another without return.

Their unidirectional feedback system meant employees could not respond to managers.

4. In materials science, having properties that differ along only one axis.

The unidirectional carbon fiber gives strength along a single line.