simultaneous
gb/sˌaɪməltˈeɪniəs/ us/sˌaɪməltˈeɪniəs/
B2
English
~ 8100
Senses
0 senses
adjective
B2
property
1
happening at the same time
Happening or existing at the same time as another thing.
Usage pattern:
simultaneous [event] / [event] is simultaneous with [event]
Common mistake:
Learners sometimes say *"simultaneous to"* instead of *"simultaneous with"*. In most cases, use: *"X is simultaneous with Y"*. Learners also confuse *simultaneous* with *spontaneous*; *simultaneous* is about time (things happening together), while *spontaneous* is about something happening suddenly or without planning.
Synonyms
concurrent (Often used in more formal or technical contexts, especially for activities or processes happening together.)
|
at the same time (A more informal, phrasal way to express the same idea; less concise and not used as an adjective before a noun.)
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coinciding (Emphasizes events meeting at the same point in time, sometimes by chance.)
Antonyms
separate (Highlights that things are not happening together but apart in time or place.)
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sequential (Stresses that events happen one after another, not at the same time.)
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successive (Focuses on things following each other in order, instead of occurring together.)
Collocations
simultaneous translation
|simultaneous equations
|simultaneous release
|simultaneous attack
|simultaneous broadcast
|simultaneous movement
Themes
time
|science
|communication
|core_vocabulary
Examples
- The two explosions were simultaneous and shook the whole city.
- The company announced the simultaneous release of the game on all major platforms.
- Scientists recorded simultaneous temperature changes at sites across the globe.
- The conference will feature simultaneous translation into three languages.
- Students are learning how to solve simultaneous equations in math class.
Learner examples
- The show will have simultaneous translation in English and Spanish.
- There were simultaneous meetings in different rooms of the building.
- In math, we solved two simultaneous equations.
- The city held simultaneous concerts in several parks.
- Two simultaneous calls came to my phone at exactly 8 p.m.
Grammar
Dictionary form
simultaneous
IPA
GB/sˌaɪməltˈeɪniəs/
US/sˌaɪməltˈeɪniəs/
Syllables & stress
sim - ul - tan - eous (4 syllables)
Stress on 3rd syllable (tan)
Word forms
Adjective
- Base: simultaneous
Word family
Core family
simultaneously
adverb B2
Related words
Negative and opposite forms
asynchronous
adjective
asynchronously
adverb
Advanced or less common
Expressions
simultaneous attack
1/sˌaɪməltˈeɪniəs ətˈæk/
fixed phrase
coordinated attacks at one moment
Several attacks that are planned to happen at exactly the same time.
Examples
- The army launched a simultaneous attack on enemy bases along the border.
- Police prevented a simultaneous attack on several government buildings.
simultaneous broadcast
1/sˌaɪməltˈeɪniəs bɹˈɔdkˌæst/
fixed phrase
same program aired at once
A TV or radio program that is shown or played at the same time on more than one channel or platform.
Examples
- The concert will be available via simultaneous broadcast on TV and online.
- A simultaneous broadcast allowed fans around the world to watch the final live.
simultaneous equations
1/sˌaɪməltˈeɪniəs ɪkwˈeɪʒənz/
fixed phrase
technical
a set of linked equations
Two or more math equations that share the same unknown numbers and must be solved together.
Examples
- In algebra class, we learned different methods for solving simultaneous equations.
- Engineers often use simultaneous equations to model complex systems.
simultaneous release
1/sˌaɪməltˈeɪniəs ɹilˈis/
fixed phrase
product launched at same time everywhere
When a film, game, or other product comes out in several places or formats at the same time.
Examples
- The movie will have a simultaneous release in theaters and on streaming platforms.
- A simultaneous release in key markets helped boost the game's sales.
simultaneous translation
1/sˌaɪməltˈeɪniəs tɹænzlˈeɪʃən/
fixed phrase
translation done at the same time
A type of translation where the translator speaks in another language at the same time as the original speaker.
Examples
- The conference provides simultaneous translation into French, German, and Spanish.
- Without simultaneous translation, many delegates would not understand the discussion.