simultaneous - definition and synonyms

 
adjective 

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/ˌsɪm(ə)lˈteɪniəs/
  1. happening or done at the same time

    In simultaneous announcements, the two men resigned from their jobs.

derived words

simultaneity

 

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/ˌsɪm(ə)ltəˈneɪəti/
noun [uncountable]

simultaneously

 

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adverb

a film that opened simultaneously in the US and in Europe