UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌsɛnəˈtɔːrɪəl/

US:USA pronuncation: IPAUSA pronuncation: IPA/ˌsɛnəˈtɔriəl/

US:USA pronunciation: respellingUSA pronunciation: respelling(sen′ə tôrē əl, -tōr-)

WordReference Random House Unabridged Dictionary of American English © 2020
sen•a•to•ri•al  (sen′ə tôrē əl, -tōr-),USA pronunciation adj. 
  1. Governmentof, pertaining to, characteristic of, or befitting a senator or senate:senatorial oratory.
  2. Governmentconsisting of senators.
sen′a•tori•al•ly, adv. 
  • Latin senātōri(us) (see senator, -tory1) + -al1
  • 1730–40

Collins Concise English Dictionary © HarperCollins Publishers::
ˌsenaˈtorial /ˌsɛnəˈtɔːrɪəl/ adj
  1. of, relating to, befitting, or characteristic of a senator
  2. composed of senators
  3. chiefly US electing or entitled to representation by a senator: senatorial districts

ˌsenaˈtorially adv
WordReference Random House Learner's Dictionary of American English © 2020
sen•a•tor /ˈsɛnətɚ/USA pronunciation   n. [sometimes: Senator]
  1. Governmenta member of a senate: [countable]Several senators were interviewed.[proper noun; used before a name]Senator Smith will answer your questions now.
sen•a•to•ri•al /ˌsɛnəˈtɔriəl/USA pronunciation  adj. See -sene-.

WordReference Random House Unabridged Dictionary of American English © 2020
sen•a•tor  (senə tər),USA pronunciation n. 
  1. Governmenta member of a senate.
  2. Government(cap.) (in the U.S.) a title of respect accorded a person who is or has been a member of the Senate.
sena•tor•ship′, n. 
  • Latin senātor, equivalent. to sen(ātus) senate + -ātor -ator
  • Anglo-French
  • Middle English senatour 1175–1225

'senatorial' also found in these entries (note: many are not synonyms or translations):

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