parliamentarian
noun
par·lia·men·tar·i·an ˌpär-lə-ˌmen-ˈter-ē-ən 
-mən-,
also ˌpärl-yə-
1
often capitalized : an adherent of the parliament in opposition to the king during the English Civil War
2
: an expert in the rules and usages of a deliberative assembly (such as a parliament)
3
: a member of a parliament
Example Sentences
Recent Examples on the Web Why does the Senate parliamentarian have any power at all? 
Matt Ford, The New Republic, 9 Aug. 2022 Before debate began Saturday, the bill's prescription drug price curbs were diluted by the Senate's nonpartisan parliamentarian. CBS News, 7 Aug. 2022 Before debate began, the bill's prescription drug price curbs were diluted by the Senate's nonpartisan parliamentarian. Alan Fram And Lisa Mascaro, Chron, 7 Aug. 2022 Reconciliation requires the bill’s measures to be directly related to the budget, and provisions that the Senate’s nonpartisan parliamentarian considers to be incidental to the budget could be removed. Andrew Duehren, WSJ, 5 Aug. 2022 While Democrats await the Senate's rule-keeping parliamentarian scrubbing through the new deal to ensure all provisions meet the strict guidelines of reconciliation, details of what exactly are in the bill are not yet known. Allison Pecorin, ABC News, 27 July 2022 Elizabeth MacDonough, the Senate parliamentarian, has twice blocked Democratic plans to include immigration reform that could offer protection for millions of undocumented immigrant in the reconciliation bill. Rebecca Morin, USA TODAY, 16 Dec. 2021 There are strict rules for using reconciliation, and those rules are subject to the Senate parliamentarian’s interpretation. Grace Segers, The New Republic, 16 Nov. 2021 The Senate parliamentarian’s ruling further dampened legislative prospects. Elliot Spagat And Mark Sherman, chicagotribune.com, 27 Sep. 2021 See More
Matt Ford, The New Republic, 9 Aug. 2022 Before debate began Saturday, the bill's prescription drug price curbs were diluted by the Senate's nonpartisan parliamentarian. CBS News, 7 Aug. 2022 Before debate began, the bill's prescription drug price curbs were diluted by the Senate's nonpartisan parliamentarian. Alan Fram And Lisa Mascaro, Chron, 7 Aug. 2022 Reconciliation requires the bill’s measures to be directly related to the budget, and provisions that the Senate’s nonpartisan parliamentarian considers to be incidental to the budget could be removed. Andrew Duehren, WSJ, 5 Aug. 2022 While Democrats await the Senate's rule-keeping parliamentarian scrubbing through the new deal to ensure all provisions meet the strict guidelines of reconciliation, details of what exactly are in the bill are not yet known. Allison Pecorin, ABC News, 27 July 2022 Elizabeth MacDonough, the Senate parliamentarian, has twice blocked Democratic plans to include immigration reform that could offer protection for millions of undocumented immigrant in the reconciliation bill. Rebecca Morin, USA TODAY, 16 Dec. 2021 There are strict rules for using reconciliation, and those rules are subject to the Senate parliamentarian’s interpretation. Grace Segers, The New Republic, 16 Nov. 2021 The Senate parliamentarian’s ruling further dampened legislative prospects. Elliot Spagat And Mark Sherman, chicagotribune.com, 27 Sep. 2021 See More Word History
Etymology
parliament + -arian
First Known Use
1642, in the meaning defined at sense 1
Legal Definition
parliamentarian
noun
par·lia·men·tar·i·an ˌpär-lə-ˌmen-ˈtar-ē-ən, ˌpärl-yə-, -mən-
1
: an expert in the rules and usages of a parliament or other deliberative assembly
specifically, often capitalized : an officer of a legislative body acting as adviser on matters of procedure
Note: The parliamentarian of the U.S. House of Representatives is appointed by the Speaker of the House. The Secretary of the Senate appoints the Senate's parliamentarian with approval of the majority leader.
2
: a member of a parliament