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simultaneous

[ sahy-muhl-tey-nee-uhs, sim-uhl- ]
/ ˌsaɪ məlˈteɪ ni əs, ˌsɪm əl- /
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See synonyms for: simultaneous / simultaneity / simultaneously / simultaneousness on Thesaurus.com
adjective
existing, occurring, or operating at the same time; concurrent: simultaneous movements;simultaneous translation.
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Origin of simultaneous

First recorded in 1650–60; from Latin simul “together” (see similar) + (instan)taneous

OTHER WORDS FROM simultaneous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

Words related to simultaneous

concurrent, accompanying, agreeing, at the same time, coetaneous, coeval, coexistent, coexisting, coincident, coinciding, concurring, contemporaneous, contemporary, dead heat, synchronal, synchronic, synchronous

How to use simultaneous in a sentence

British Dictionary definitions for simultaneous

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 forms of simultaneous

simultaneously, 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
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