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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

It consists of 372 dual-monopole vertical elements each 19 feet high, backed by a huge reflector screen which makes the antenna substantially unidirectional.

From The Dawn of Amateur Radio in the U.K. and Greece: a personal view by Joly, Norman F.