syn·​chro·​nous | \ ˈsiŋ-krə-nəs How to pronounce synchronous (audio) , ˈsin-\

Definition of synchronous

1 : happening, existing, or arising at precisely the same time
2 : recurring or operating at exactly the same periods
3 : involving or indicating synchronism
4a : having the same period also : having the same period and phase
5 : of, used in, or being digital communication (as between computers) in which a common timing signal is established that dictates when individual bits can be transmitted and which allows for very high rates of data transfer

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Other Words from synchronous

synchronously adverb
synchronousness noun

Choose the Right Synonym for synchronous

contemporary, contemporaneous, coeval, synchronous, simultaneous, coincident mean existing or occurring at the same time. contemporary is likely to apply to people and what relates to them. Abraham Lincoln was contemporary with Charles Darwin contemporaneous is more often applied to events than to people. contemporaneous accounts of the kidnapping coeval refers usually to periods, ages, eras, eons. two stars thought to be coeval synchronous implies exact correspondence in time and especially in periodic intervals. synchronous timepieces simultaneous implies correspondence in a moment of time. the two shots were simultaneous coincident is applied to events and may be used in order to avoid implication of causal relationship. the end of World War II was coincident with a great vintage year

Did You Know?

Communications satellites are usually put into a synchronous (or geosynchronous) orbit, circling the earth once every 24 hours and so appearing to hover over a single spot on the surface. This type of synchronized movement is important, since you have to know where to aim your satellite dish. In the computer field, synchronous usually refers to the use of a simple timing signal that permits very rapid exchange of data between computers. The kind of mysterious coincidence sometimes called synchronicity—such as the appearance of two different comic-strip characters named Dennis the Menace in the U.S. and Britain within three days of each other in 1951—has fascinated people for centuries.

Examples of synchronous in a Sentence

the synchronous arrival of a baby sister and loss of a beloved grandmother strongly affected the child

Recent Examples on the Web

Madisonian architecture infused with Newtonian genius: three separate, coequal branches locked in synchronous orbit by competing interests. Don Willett, WSJ, "Happy Constitution Day, if You Can Keep It," 16 Sep. 2018 The synchronous brain waves are then an expression of the empathy. Diana Gitig, Ars Technica, "He’s not just saying he feels her pain—he really is," 4 Mar. 2018 The Greater Washington Chinese American Community’s float was the shape of a ship, while a band behind the group played drums in a synchronous rhythm. Reis Thebault, Washington Post, "Fourth of July celebrations more meaningful, worrisome for some Americans," 4 July 2018 So here is what’s different — Slack is synchronous. Casey Newton, The Verge, "Slack didn’t kill email — and it might have made it stronger," 4 July 2018 Soehn predicted the synchronous fireflies in the Great Smoky Mountains will peak with their light show around June 7. Kaitlyn Schallhorn, Fox News, "Thousands of fireflies light up US national parks with 'magical' synchronized mating ritual," 22 May 2018 Go in early summer to catch the exceptional synchronous fireflies that light up the night sky for a week or two each year. Megan Michelson, Outside Online, "6 Under-the-Radar National Parks You Should Visit," 20 June 2018 On either side of the battery pack is a synchronous permanent magnet electric motor. Jonathan M. Gitlin, Ars Technica, "Forget about that Tesla—the Jaguar I-Pace is the most compelling EV yet," 14 June 2018 Iceye wants to launch 18 satellites weighing 85kg each to a Sun-synchronous orbit at an altitude of 400 to 600km. Eric Berger, Ars Technica, "Rocket Report: NASA chief sort of endorses SLS; Russia woes; Virgin Orbit," 8 June 2018

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

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First Known Use of synchronous

1669, in the meaning defined at sense 1

History and Etymology for synchronous

Late Latin synchronos, from Greek, from syn- + chronos time

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The first known use of synchronous was in 1669

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English Language Learners Definition of synchronous

formal + technical : happening, moving, or existing at the same time


syn·​chro·​nous | \ ˈsiŋ-krə-nəs, ˈsin- How to pronounce synchronous (audio) \

Medical Definition of synchronous

1 : happening, existing, or arising at precisely the same time
2 : recurring or operating at exactly the same periods
3 : having the same period also : having the same period and phase

Other Words from synchronous

synchronously adverb

More from Merriam-Webster on synchronous

Thesaurus: All synonyms and antonyms for synchronous

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showing courage and determination

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