unidirectional: Meaning and Definition of

u•ni•di•rec•tion•al

Pronunciation: (y"ni-di-rek'shu-nl, -dī-), [key]
— adj.
  1. operating or moving in one direction only; not changing direction: a unidirectional flow.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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