Antonyms of adj bidirectional

1 sense of bidirectional

Sense 1
bidirectional (vs. unidirectional) -- (reactive or functioning or allowing movement in two usually opposite directions)

unidirectional (vs. bidirectional) -- (operating or moving or allowing movement in one direction only; "a unidirectional flow"; "a unidirectional antenna"; "a unidirectional approach to a problem")
        => one-way -- (moving or permitting movement in one direction only; "one-way streets"; "a one-way ticket")
        => simplex -- (allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time; "simplex system")
        => unifacial -- (having but one principal or specialized surface; "a primitive unifacial flint tool")

Similarity of adj bidirectional

1 sense of bidirectional

Sense 1
bidirectional (vs. unidirectional) -- (reactive or functioning or allowing movement in two usually opposite directions)
       => biface, bifacial -- (having two faces or fronts; "the Roman Janus is bifacial")
       => duplex -- (allowing communication in opposite directions simultaneously; "duplex system"; "duplex telephony")
       => two-way -- (operating or permitting operation in either of two opposite directions; "a two-way valve"; "two-way traffic"; "two-way streets")