occurring at the same time; coinciding in time; contemporaneous; simultaneous.
going on at the same rate and exactly together; recurring together.
Physics, Electricity. having the same frequency and zero phase difference.
Computers, Telecommunications. of, relating to, or operating using fixed-time intervals controlled by a clock (opposed to asynchronous).
Origin of synchronous
1660–70;Related formssyn·chro·nous·ly, adverbsyn·chro·nous·ness, nounnon·syn·chro·nous, adjectivenon·syn·chro·nous·ly, adverbnon·syn·chro·nous·ness, nounun·syn·chro·nous, adjectiveun·syn·chro·nous·ly, adverbun·syn·chro·nous·ness, noun
< Late Latin synchronus
< Greek sýnchronos,
equivalent to syn- syn-
) time + -os
adj. suffix; see -ous
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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Contemporary Examples of synchronous
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British Dictionary definitions for synchronous
Derived Formssynchronously, adverbsynchronousness, noun
occurring at the same time; contemporaneous
physics (of periodic phenomena, such as voltages) having the same frequency and phase
occurring or recurring exactly together and at the same ratethe synchronous flapping of a bird's wings
Word Origin for synchronous
C17: from Late Latin synchronus, from Greek sunkhronos, from syn- + khronos time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for synchronous
1660s, "existing or happening at the same time," from Late Latin synchronus "simultaneous," from Greek synchronos "happening at the same time," from syn- "together" (see syn-) + khronos "time" (see chrono-). Meaning "recurring at the same successive instants of time" is attested from 1670s.
Online Etymology Dictionary, © 2010 Douglas Harper
Occurring or existing at the same time.
The American Heritage® Stedman's Medical Dictionary
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