What does simultaneous mean?

Definitions for simultaneous
ˌsaɪ məlˈteɪ ni əs, ˌsɪm əl-si·mul·ta·ne·ous

This dictionary definitions page includes all the possible meanings, example usage and translations of the word simultaneous.

Princeton's WordNet

  1. coincident, coincidental, coinciding, concurrent, co-occurrent, cooccurring, simultaneousadjective

    occurring or operating at the same time

    "a series of coincident events"


  1. simultaneousadjective

    Occurring or transpiring at the same time.

  2. Etymology: From simultaneus, from simultim, from simul; compare similar.

Samuel Johnson's Dictionary

  1. Simultaneousadjective

    Acting together; existing at the same time.

    Etymology: simultaneus, Latin.

    If the parts may all change places at the same time, without any respect of priority or posteriority to each other’s motion, why may not bullets, closely crouded in a box, move by a like mutual and simultaneous exchange? Joseph Glanvill.


  1. simultaneous

    Simultaneous refers to two or more events or actions occurring or existing at the same exact time period. It implies a concurrent, parallel, or side-by-side happening of things.

Webster Dictionary

  1. Simultaneousadjective

    existing, happening, or done, at the same time; as, simultaneous events

  2. Etymology: [LL. simultim at the same time, fr. L. simul. See Simulate.]

Chambers 20th Century Dictionary

  1. Simultaneous

    sim-ul-t#x101;′nē-us, adj. acting, existing, or happening at the same time: (math.) satisfied by the same values of the variables or unknown quantities—of a set of equations.—ns. Simultanē′ity, Simultā′neousness.—adv. Simultā′neously. [Low L. simultaneus—L. simul, at the same time.]

How to pronounce simultaneous?

How to say simultaneous in sign language?


  1. Chaldean Numerology

    The numerical value of simultaneous in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of simultaneous in Pythagorean Numerology is: 7

Examples of simultaneous in a Sentence

  1. Susan Taghioff:

    Despite this, the influenza vaccine is by no means a replacement for the COVID-19 vaccine, and we advocate for everyone to receive their COVID-19 vaccine if able to. Continued promotion of the influenza vaccine also has the potential to help the global population avoid a possible ‘twindemic’ – a simultaneous outbreak of both influenza and coronavirus.

  2. Luis Jalandoni:

    It is possible we will have a separate but coordinated and simultaneous ceasefire with the government, we will still discuss the mode and timeframe of the truce, but we can easily agree to a simultaneous ceasefire.

  3. Mark Williams:

    At this level, stocks are not cheap, the simultaneous cuts in rates and banks' reserve ratios were very strong stimulus. Since that didn't stop the sell-off, then the market wonders what else the policy makers have up in their sleeves.

  4. Warwick Grigor:

    Gold has been on the back foot for a month now, had it not been for the simultaneous fall in the Australian dollar, the market reaction would have been greater.

  5. Warwick Grigor:

    Had it not been for the simultaneous fall in the Australian dollar, the market reaction would have been greater.

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Translations for simultaneous

From our Multilingual Translation Dictionary

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"simultaneous." Definitions.net. STANDS4 LLC, 2024. Web. 19 Jun 2024. <https://www.definitions.net/definition/simultaneous>.

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    a decorative musical accompaniment (often improvised) added above a basic melody
    A abet
    B abrade
    C descant
    D suffuse

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