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 (sĭng′krə-nəs, sĭn′-)
1. Occurring or existing at the same time. See Synonyms at contemporary.
2. Moving or operating at the same rate: synchronous motors.
a. Having identical periods.
b. Having identical period and phase: synchronous oscillations.
c. Relating to or being a satellite that orbits a celestial body at a speed that matches the body's rotation, thus remaining stationary as observed from the body's surface.
d. Synchronized by an electronic clock: synchronous signaling.

[From Late Latin synchronus, from Greek sunkhronos : sun-, syn- + khronos, time.]

syn′chro·nous·ly adv.
syn′chro·nous·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. occurring at the same time; contemporaneous
2. (General Physics) physics (of periodic phenomena, such as voltages) having the same frequency and phase
3. occurring or recurring exactly together and at the same rate: the synchronous flapping of a bird's wings.
[C17: from Late Latin synchronus, from Greek sunkhronos, from syn- + khronos time]
ˈsynchronously adv
ˈsynchronousness n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsɪŋ krə nəs)

1. occurring at the same time; coinciding in time; contemporaneous; simultaneous.
2. going on at the same rate and exactly together; recurring together.
3. (of two or more electrical devices) having the same frequency or period; in phase.
[1660–70; < Late Latin synchronus < Greek sýnchronos=syn- syn- + -chronos, adj. derivative of chrónos time; see -ous]
syn′chro•nous•ly, adv.
syn′chro•nous•ness, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.synchronous - occurring or existing at the same time or having the same period or phase; "recovery was synchronous with therapy"- Jour.A.M.A.; "a synchronous set of clocks"; "the synchronous action of a bird's wings in flight"; "synchronous oscillations"
synchronic - concerned with phenomena (especially language) at a particular period without considering historical antecedents; "synchronic linguistics"
asynchronous - not synchronous; not occurring or existing at the same time or having the same period or phase
2.synchronous - (digital communication) pertaining to a transmission technique that requires a common clock signal (a timing reference) between the communicating devices in order to coordinate their transmissions
asynchronous - (digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices; timing signals are derived from special characters in the data stream itself
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


Belonging to the same period of time as another:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


[ˈsɪŋkrənəs] ADJsincrónico, síncrono
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


adjgleichzeitig; (Comput) → synchron
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in classic literature ?
He is more inclined to believe that the expulsion of the foe from England was synchronous with widespread victories by the allies upon the continent, and that the people of England merely emigrated from their ruined cities and their devastated, blood-drenched fields to the mainland, in the hope of finding, in the domain of the conquered enemy, cities and farms which would replace those they had lost.
The "Synchronous Condenser Market by Cooling Type (Hydrogen, Air, Water), Reactive Power Rating (Up to 100 MVAr, 100-200 MVAr, Above 200 MVAr), Type, Starting Method (Static Frequency Converter, Pony Motor), End-User, and Region - Global Forecast to 2024" report has been added to's offering.
It is well known that one of the primary reasons students select online classes is scheduling conflicts that prevent them from getting to campus or participating in a course at a specific time, so my first challenge was convincing this population of students to sign up for a class with a synchronous component.
[ClickPress, Wed Feb 27 2019] A new report titled " Synchronous Condensers Market Analysis, Size, Share, Growth and Opportunity Assessment till 2027 " has been included in the enormous research repository of Market Research Reports Search Engine (MRRSE) that compiles various facets of the Synchronous Condensers market at a global level portraying a holistic analysis of the marketplace along with intelligence on key participants.
Gymnasts from Japan, Belarus, Canada, France, Portugal, Australia, New Zealand and Brazil will perform in the synchronous program among women.
Patients with synchronous endometrioid tumors of the endometrium and ovary are generally younger, tend to be of low grade, and the prognosis of endometrioid type carcinoma is better than other histological types of carcinoma.
The units adopt the High-Speed Permanent-Magnet Synchronous Direct-Driven Motor with Two-Stage Impeller Inverter Drive technology, thus cooling is faster and more efficient, and energy conservation effect is 40% higher than a common centrifugal chiller.
In conjunction with the agreement, BostonSight will utilise PeerMed for Intra-network synchronous and asynchronous communication with PROSE providers across its international networks, provide synchronous and asynchronous connectivity to residents and fellows during PROSE training as well as consultation between customer doctors fitting patients with BostonSight SCLERAL lenses and the BostonSight SCLERAL consultants who facilitate proper fitting.
[H.sub.2a]: Employee commitment has a significant synchronous effect on employee social engagement
In comparison, synchronous motors can satisfy a considerably wider range of applications and offer a host of advantages when installed in food manufacturing and processing conveyors.
Data were collected only from those students who were having experience of synchronous along with asynchronous e-learning activities.