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unidirectional

American  
[yoo-ni-di-rek-shuh-nl, -dahy-] / ˌyu nɪ dɪˈrɛk ʃə nl, -daɪ- /

adjective

  1. operating or moving in one direction only; not changing direction.

    a unidirectional flow.


unidirectional British  
/ ˌjuːnɪdɪˈrɛkʃənəl, -daɪ- /

adjective

  1. having, moving in, or operating in only one direction

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of unidirectional

First recorded in 1880–85; uni- + directional

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This represents a significant advancement over previous technologies, which were limited to unidirectional wavelength tuning.

From Science Daily • Jun. 3, 2024

Despite the challenges, foreign investment flows are not unidirectional.

From Reuters • Nov. 27, 2023

Given that many of the involved spices originate across the Asian continent—not just South Asia—he suggests it was more of an exchange than a unidirectional flow of culinary traditions.

From Scientific American • Jul. 21, 2023

With modeling and experiment, the team is working to get the best spherical compression from its unidirectional driver.

From Science Magazine • Feb. 14, 2023

Electric currents may be also classified as constant or variable and as unidirectional or “direct,” that is flowing always in the same direction, or “alternating,” that is reversing their direction at regular intervals.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" by Various

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