unidirectional

From uni- +‎ directional.

• (Received Pronunciation) IPA^(key): /ˌjuːnɨdɨˈɹɛkʃənəl/, /-daɪ-/, /-ˈɹɛkʃənl̩/, /-ˈɹɛkʃnəl/
• (General American) enPR: yo͞o'nĭ-dĭ-rĕkʹshən-(ə)l, -dī-, -rĕkʹshnəl, IPA^(key): /ˌjunɪ̈dɪ̈ˈɹɛkʃənəl/, /-daɪ-/, /-ˈɹɛkʃənl̩/, /-ˈɹɛkʃnəl/
• Rhymes: -ɛkʃənəl, -ɛkʃnəl
• Hyphenation: uni‧di‧rec‧tion‧al

unidirectional (not comparable)

1. Pertaining to only one direction, e.g.: where all component parts are aligned in the same direction in space.
   • 2005, Richard Samson, Training for the New Millennium: Pedagogies for translation and interpreting, edited by Martha Tennent, Benjamins Translation Library, p. 119:

     Equally important is the class mailing list, which facilitates two-way communication at a distance. (By contrast, the web page is basically a unidirectional teacher-to-student communication.)

• bidirectional

• omnidirectional

unidirectional (plural unidirectionals)

1. A fabric in which the majority of fibres run in the same single direction.