simultaneous

[ sahy-muhl-tey-nee-uhs, sim-uhl- ]

/ ˌsaɪ məlˈteɪ ni əs, ˌsɪm əl- /

SEE MORE SYNONYMS FOR simultaneous ON THESAURUS.COM

adjective

existing, occurring, or operating at the same time; concurrent: simultaneous movements; simultaneous translation.

RELATED WORDS

Nearby words

simulatory, simulcast, simulium, simultanagnosia, simultaneity, simultaneous, simultaneous equations, simurgh, simv, simvastatin, sin

Origin of simultaneous

1650–60; < Latin simul together (see similar) + (instan)taneous

SYNONYMS FOR simultaneous

synchronous, coincident.

SEE MORE SYNONYMS FOR simultaneous ON THESAURUS.COM

Related forms

si·mul·ta·ne·ous·ly, adverbsi·mul·ta·ne·ous·ness, si·mul·ta·ne·i·ty

[sahy-muhl-tuh-nee-i-tee, sim-uhl-] /ˌsaɪ məl təˈni ɪ ti, ˌsɪm əl-/, nounnon·si·mul·ta·ne·ous, adjectivenon·si·mul·ta·ne·ous·ly, adverb

un·si·mul·ta·ne·ous, adjectiveun·si·mul·ta·ne·ous·ly, adverbun·si·mul·ta·ne·ous·ness, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for simultaneity

We have not a direct intuition of simultaneity, nor of the equality of two durations.
Major Prophets of To-Day|Edwin E. Slosson
But existence (das Dasein), measured through time, has two dimensions, succession and simultaneity.
A Commentary to Kant's 'Critique of Pure Reason'|Norman Kemp Smith
The integrity of sex relation is not to be found in a succession or simultaneity of mates, easily taken and as easily discarded.
Is Polite Society Polite?|Julia Ward Howe
Mistakes in time therefore are comparatively frequent and simultaneity between action and vision comparatively rare.
The Wrack of the Storm|Maurice Maeterlinck

The unity of this general present fact is expressed by the concept of simultaneity.
The Concept of Nature|Alfred North Whitehead

British Dictionary definitions for simultaneity

simultaneous

/ (ˌsɪməlˈteɪnɪəs, US ˌsaɪməlˈteɪnɪəs) /

adjective

occurring, existing, or operating at the same time; concurrent

noun

chess a display in which one player plays a number of opponents at once, walking from board to boardSometimes shortened to: simul

Derived Formssimultaneously, adverbsimultaneousness or simultaneity (ˌsɪməltəˈniːɪtɪ, US ˌsaɪməltəˈniːɪtɪ), noun

Word Origin for simultaneous

C17: formed on the model of instantaneous from Latin simul at the same time, together

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for simultaneity (1 of 2)

simultaneity

1650s, from simultaneous + -ity.

Word Origin and History for simultaneity (1 of 2)

simultaneous

adj.

1650s, from Medieval Latin simultaneus, perhaps from simultim "at the same time," extended from Latin simul "at the same time" (see similar (adj.)), or from simul with ending abstracted from Late Latin spontaneus, where the -t- is organic. Related: Simultaneously.

simultaneous

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RELATED WORDS

Nearby words

Origin of simultaneous

Examples from the Web for simultaneity

British Dictionary definitions for.css-ylq2vz{color:#1a1a1a;} simultaneity

simultaneous

adjective

noun

Word Origin for simultaneous

Word Origin and History for simultaneity (1 of 2)

simultaneity

Word Origin and History for simultaneity (1 of 2)

simultaneous

adjective

British Dictionary definitions for simultaneity