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Synonyms

simultaneity

American  
[sahy-muhl-tuh-nee-i-tee, sim-uhl-, -ney-] / ˌsaɪ məl təˈni ɪ ti, ˌsɪm əl-, -ˈneɪ- /
Sometimes simultaneousness

noun

  1. the state or quality of existing, occurring, or operating at the same time.

    The simultaneity of the two events was established by checking timestamps on recordings.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In the meantime, we need realistic strategies for coping with simultaneity.

From The Wall Street Journal Mar. 6, 2026

The simultaneity of the play’s two levels gets lost in the comic mayhem of Act Two.

From Los Angeles Times Feb. 10, 2025

So many things of both celestial and terrestrial nature happened at once in Washington on Tuesday that their simultaneity seemed to require attention.

From Washington Post Mar. 7, 2023

Like a good book or piece of music, a park bench allows for a sense of solitude and community at the same time, a simultaneity that’s crucial to life in a great city.

From New York Times Oct. 12, 2021

They wheeled and turned in macabre simultaneity; and melted through changes of formation with the weird ease of chorus dancers in Lunar Bowl.

From "I, Robot" by Isaac Asimov

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