reg·​u·​la·​tor | \ ˈre-gyə-ˌlā-tər also ˈrā- \

Definition of regulator 

1 : one that regulates

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Synonyms for regulator


control, controller

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Examples of regulator in a Sentence

the voltage regulator will make sure your car's alternator gets the right amount of electricity

Recent Examples on the Web

Without reliable ways to remotely identify and track drones, regulators, law-enforcement agencies and national-security officials have resisted opening up swaths of U.S. airspace for the burgeoning industry. Andy Pasztor, WSJ, "FAA Launches Test Program to Speed Up Drone Identification Rules," 30 Dec. 2018 The corrosive water was not properly treated due to an incorrect reading of federal rules by state regulators, and lead leached from old pipes into homes and led to elevated levels of the toxin in children. David Eggert, The Seattle Times, "2 Michigan regulators take plea deals in Flint water case," 26 Dec. 2018 With companies like Airbnb and Uber consistently engaged in battles with local regulators, the tide may have turned for Big Tech. Patrick Sisson, Curbed, "Scooter companies, seeking to shape regulations, hire transit advocates," 17 Oct. 2018 Keep in mind that some kits don’t include pressure regulators, timers, backflow preventers, and line filters. The Editors, Good Housekeeping, "How to Install a Drip Irrigation System in Your Garden," 17 July 2018 In a midday press conference, Lorenzo Cordova, head of the electoral regulator INE, said the indications were that voting was proceeding peacefully so far. Nacha Cattan And Eric Martin / Bloomberg, Time, "Mexicans Go to the Polls With Andres Manuel Lopez Obrador on the Brink of Historic Victory," 1 July 2018 Addressing the situation requires a collective effort between funding agencies, regulators, farmers and others, the authors add in the review, published in Science. Brooke Borel, Scientific American, "Weeds Are Winning the War against Herbicide Resistance," 18 June 2018 One of the industry's most powerful regulators, the Office of the Comptroller of the Currency, took steps last month to encourage banks to compete directly with payday lenders again, but the industry is not expected to rush in, analysts say. Renae Merle, ajc, "In some states, debate over payday lending unfolds in the black church," 7 June 2018 After the Cambridge Analytica scandal broke, lawmakers, regulators, and users all over the world were, understandably, outraged. Emily Stewart, Vox, "Facebook’s very bad year, explained," 21 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'regulator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of regulator

1648, in the meaning defined at sense 1

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Statistics for regulator

Last Updated

8 Jan 2019

Look-up Popularity

Time Traveler for regulator

The first known use of regulator was in 1648

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More Definitions for regulator



English Language Learners Definition of regulator

: a device for controlling the level or amount of something (such as speed or temperature)

: an official who works for the part of the government that controls a public activity (such as banking or insurance) by making and enforcing rules


reg·​u·​la·​tor | \ ˈreg-yə-ˌlāt-ər \

Medical Definition of regulator 

1 : one that regulates


reg·​u·​la·​tor | \ ˈre-gyə-ˌlā-tər \

Legal Definition of regulator 

: one (as a government agency) that regulates

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Comments on regulator

What made you want to look up regulator? Please tell us where you read or heard it (including the quote, if possible).


marked by shyness and lack of polish

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