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Definition of simultaneous

simultaneous

/ˌsaɪ.məlˈteɪ.ni.əs/
si · mul · ta · ne · ous
Adverb:simultaneously
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simultaneous Lexical Profile

simultaneous Game Scores & Validity

• adjective

1

Occurring, operating, or done at the exact same time.

Example

"The international conference provided simultaneous translation in six different languages."

2

Involving a set of two or more mathematical equations that share variables and are satisfied by the same values at the same time.

Example

"In algebra class, the students learned how to solve simultaneous linear equations using the elimination method."

Synonyms
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Antonyms
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• Rhymes for simultaneous

• Nearby Words

simulation
simulator
simulcast
simultaneous
simultaneously
sin
sinaloan milk snake

Word Origin & Etymology

Coined in the mid-17th century from Medieval Latin simultaneus, derived from Classical Latin simul ('at the same time, together'), with the ending modeled after Latin spontaneus ('spontaneous').

Cite this Entry

Wordmom. (2026). Definition of Simultaneous. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/simultaneous
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