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English definition of “senator”

senator

noun [C] uk   /ˈsen.ə.tər/ us    /-t̬ɚ/ (written abbreviation Sen.)
a politician who has been elected to a Senate: Only two senators voted against the bill. [as form of address] It's a pleasure to meet you, Senator.United States politics and government
senatorial
adjective uk   /ˌsen.əˈtɔː.ri.əl/ us    /-ˈtɔːr.i-/ mainly US
a senatorial candidate/committeeUnited States politics and government
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(Definition of senator from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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