Unidirectional Meaning
/ˌjuː.nɪ.dɪˈɹɛk.ʃə.nəlDefinition, CEFR level C1, pronunciation, examples, and quiz.
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Definition
adjPertaining to only one direction, e.g.: where all component parts are aligned in the same direction in space.
adjNot subject to change or reversal of direction.
Sentence Examples
The device uses a unidirectional microphone to capture the sound.
A unidirectional flow means that something moves in only one way.
The valve allows a unidirectional flow of water through the pipe.
Synonyms & Antonyms
Synonyms:
Antonyms:
CEFR Practice Quiz
In a ____ traffic system, vehicles can only move forward and cannot turn around.
CEFR Practice Quiz (Alternate)
The ____ flow of traffic on the narrow street was introduced to reduce the risk of any serious accidents today.
Word Origin & History
Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinos Old Latin oinos Latin ūnus Latin ūni-der. English uni- English directional English unidirectional From uni- + directional.
Literary Quotations & Historical Citations
"[...] a reversible booster was fitted to the trailing bogie; all previous applications on the L.N.E.R. for use in main line traffic had been of unidirectional boosters, […]"
— 1941 November, O. S. Nock, “The Locomotives of Sir Nigel Gresley: Part VI—Experiments and Rebuilds 1927-33”, in Railway Magazine, page 483:
"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.)"
— 2005, Richard Samson, edited by Martha Tennent, Training for the New Millennium: Pedagogies for translation and interpreting, Benjamins Translation Library, page 119:
Explore More C1 Vocabulary Words
CEFR Practice Quiz
In a ____ traffic system, vehicles can only move forward and cannot turn around.
CEFR Practice Quiz (Alternate)
The ____ flow of traffic on the narrow street was introduced to reduce the risk of any serious accidents today.