Synonyms: unidirectional
Definition: operating or moving or allowing movement in one direction only
Usage: a unidirectional flow; a unidirectional antenna; a unidirectional approach to a problem
Similar words: one-way
Definition: moving or permitting movement in one direction only
Usage: one-way streets; a one-way ticket
Similar words: simplex
Definition: allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time
Usage: simplex system
Similar words: unifacial
Definition: having but one principal or specialized surface
Usage: a primitive unifacial flint tool