bi·​di·​rec·​tion·​al | \ ˌbī-də-ˈrek-shnəl How to pronounce bidirectional (audio) , -dī-, -shə-nᵊl \

Definition of bidirectional

: involving, moving, or taking place in two usually opposite directions bidirectional flow bidirectional replication of DNA

Keep scrolling for more

Other Words from bidirectional

bidirectionally adverb

Examples of bidirectional in a Sentence

Recent Examples on the Web This type of respiration provides the animal with more oxygen than does the bidirectional respiratory system that mammals have, in which air flows both in and out of the lungs. Matthew A. Brown, Scientific American, "The Real Dilophosaurus Would Have Eaten the Jurassic Park Version for Breakfast," 1 Jan. 2021 The MagTech is bidirectional, so it can be plugged no matter which way your cable is coming from. Popular Science, "We’ve rounded up 10 deals on stocking stuffers that won’t break the bank," 7 Dec. 2020 Cardioid focuses on one person, while bidirectional, stereo, and omnidirectional accommodate people anywhere nearby. Jason Lederman, Popular Science, "Essential gear to start your own podcast studio," 22 Nov. 2019 Hayashi and Ivry focused on an entirely different brain region and mechanism than the Weizmann scientists did — and yet both studies observed a similar bidirectional effect on time perception. Quanta Magazine, "Reasons Revealed for the Brain’s Elastic Sense of Time," 24 Sep. 2020 The automaker's at-home bidirectional charging station allows the vehicle to be used to power a home. Roberto Baldwin, Car and Driver, "Lucid Air EV Owners to Get Three Years of Free High-Speed Charging," 19 Aug. 2020 The bidirectional shuttle is mapped on a route and uses several sensors and technology such as GPS and light detection and ranging, or lidar. Washington Post, "‘This is our future’: Fairfax tests region’s first self-driving shuttle for public transit," 16 Aug. 2020 The Yeti can record in four different modes: cardioid, omni, bidirectional, and stereo. Popular Science, "USB microphones for easy, high-quality audio recording," 21 Jan. 2020 The incident could have been catastrophic if the cables hadn’t happened to be bidirectional. Robert Faturechi, ProPublica, "Faulty Equipment, Lapsed Training, Repeated Warnings: How a Preventable Disaster Killed Six Marines," 2 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bidirectional.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of bidirectional

1889, in the meaning defined above

Keep scrolling for more

Learn More about bidirectional

Time Traveler for bidirectional

Time Traveler

The first known use of bidirectional was in 1889

See more words from the same year

Statistics for bidirectional

Last Updated

29 Jan 2021

Cite this Entry

“Bidirectional.” Dictionary, Merriam-Webster, Accessed 6 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Keep scrolling for more

More Definitions for bidirectional


bi·​di·​rec·​tion·​al | \ ˌbī-də-ˈrek-shnəl, -dī-, -shən-ᵊl How to pronounce bidirectional (audio) \

Medical Definition of bidirectional

: involving, moving, or taking place in two usually opposite directions bidirectional flow of materials in axons bidirectional replication of DNA

Other Words from bidirectional

bidirectionally \ -​ē How to pronounce bidirectional (audio) \ adverb

More from Merriam-Webster on bidirectional

Nglish: Translation of bidirectional for Spanish Speakers

Comments on bidirectional

What made you want to look up bidirectional? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Who Knew?

True or False

Test your knowledge - and maybe learn something along the way.

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!