moderator
noun
mod·er·a·tor
ˈmä-də-ˌrā-tər 
plural moderators
1
: someone who presides over an assembly, meeting, or discussion: such as
a
: the chairman of a discussion group
b
: a person who administers an online forum, chat room, or group
c
: the nonpartisan presiding officer of a town meeting
d
: the presiding officer of a Presbyterian governing body
2
: one who arbitrates : mediator
3
: a substance (such as graphite) used for slowing neutrons in a nuclear reactor
Examples of moderator in a Sentence
The moderator allowed audience members to ask the governor questions.
She acts as the moderator in our office meetings.
Recent Examples on the Web
Questions submitted by analysts are read by Spencer Wang, call moderator and VP of finance, investor relations and corporate development.
—
Dade Hayes, Deadline, 17 July 2025
Republican political commentator Ana Navarro is sticking up for her View family days after President Donald Trump threatened to revoke the citizenship of one the talk show's former moderators, Rosie O'Donnell.
—EW.com, 14 July 2025
The members reach tens of millions of consumers each week, and are considered experts within the industry, representing their employers as moderators, panelists, radio/TV guests and more.
—Anne Easton, Forbes.com, 9 July 2025
Meet the Press moderator Kristen Welker noted in a post on X that Bannon, a strategist in the first Trump administration, said Republicans should take note, as Mamdani has successfully keyed into the issue of affordability in the city.
—Morgan Kromer, The Washington Examiner, 27 June 2025
See All Example Sentences for moderator
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Dade Hayes, Deadline, 17 July 2025
Republican political commentator Ana Navarro is sticking up for her View family days after President Donald Trump threatened to revoke the citizenship of one the talk show's former moderators, Rosie O'Donnell.
—EW.com, 14 July 2025
The members reach tens of millions of consumers each week, and are considered experts within the industry, representing their employers as moderators, panelists, radio/TV guests and more.
—Anne Easton, Forbes.com, 9 July 2025
Meet the Press moderator Kristen Welker noted in a post on X that Bannon, a strategist in the first Trump administration, said Republicans should take note, as Mamdani has successfully keyed into the issue of affordability in the city.
—Morgan Kromer, The Washington Examiner, 27 June 2025
See All Example Sentences for moderator
Cite this Entry
“Moderator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moderator. Accessed 29 Jul. 2025.
Copy CitationKids Definition
moderator
noun
mod·er·a·tor
ˈmäd-ə-ˌrāt-ər
1
: one that moderates: as
a
: the leader of a Presbyterian governing body
b
: the chairperson of a town meeting
c
: the chairperson of a discussion group (as on television)
2
: a substance (as graphite) used for slowing down neutrons in a nuclear reactor
Medical Definition
moderator
noun
mod·er·a·tor
ˈmäd-ə-ˌrāt-ər
: a substance (as graphite, deuterium in heavy water, or beryllium) used for slowing down neutrons in a nuclear reactor
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