Definition of synchronous in English:



  • 1Existing or occurring at the same time.

    ‘glaciations were approximately synchronous in both hemispheres’
    • ‘The paramedic then resumed chest compression at a rate of 100 per minute synchronous with ventilation.’
    • ‘Peaks in recruitment are roughly synchronous with similar peaks in aspen and white birch, suggesting that they may be associated with similar causes.’
    • ‘This reduction was synchronous with a reduction in tiller production.’
    • ‘The average hatch time of the first release was thus approximately synchronous with that of natural egg masses, and the variance in hatch date was large.’
    • ‘In many species there is considerable overlap between the fertile periods of females due to more or less synchronous breeding.’
    • ‘Due to the complexity and timing issues, typically no more than two storage nodes are involved simultaneously in synchronous data replication.’
    • ‘Since most Italian films of this period were shot without synchronous sound, both dialogue tracks could be considered dubs.’
    • ‘More important, what is under way is the first synchronous global recession in a generation.’
    • ‘Collage offers a technique for heterogenous images to appear simultaneously synchronous and radically differentiated.’
    • ‘Breeding in Tree Swallows is highly synchronous.’
    • ‘However, in synchronous interaction every student in the class participates simultaneously.’
    • ‘The lowering of montane vegetation belts in New Guinea during the last ice age was broadly synchronous with that of South America and Africa.’
    • ‘However, the ability to multitask while texting is another huge advantage over the synchronous voice call.’
    • ‘These relations, it seems, must be synchronous with one and other in the sense that there can be no relation which occurs in spacetime which isn't tied up or entangled with any other relation.’
    • ‘I can't remember having ever seen her, and yet it seems almost impossible that we haven't crossed paths before in our synchronous daily routines.’
    • ‘The timing of the first and second switches is arranged to prevent simultaneous conduction of the synchronous rectifiers.’
    • ‘As it happens, human ideologies will sometimes be synchronous with the Faith.’
    • ‘Telephone networks are optimized for synchronous and one-to-one communications.’
    • ‘Humans apparently need both the colors and the intensity of sunlight to stay synchronous with their own body rhythm.’
    • ‘Are processes of identification necessarily synchronous with the temporal structures of classical narrative, and to what extent is closure effective?’
    concurrent, happening at the same time, done at the same time, contemporaneous, concomitant, coinciding, coincident, synchronized, synchronic
    View synonyms
  • 2Astronomy
    Making or denoting an orbit around the earth or another celestial body in which one revolution is completed in the period taken for the body to rotate about its axis.

    • ‘Mercury was discovered by radar not to be in synchronous rotation about the Sun.’
    • ‘Dynamic models show that while large particles could be in synchronous rotation, smaller particles should rotate faster and look isothermal.’
    • ‘They emerge early in the year and have short, synchronous emergence periods.’
    • ‘The Red Planet's elevator, which would travel between the surface of Mars and a Mars synchronous orbit, could be constructed in Earth's orbit.’
    • ‘This is because the Moon rotates exactly once per orbit, in what is described as synchronous rotation.’


Mid 17th century: from late Latin synchronus (from Greek sunkhronos, from sun- ‘together’ + khronos ‘time’) + -ous.