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
For panel moderator China Widener, the company’s vice chair for technology, media and telecom, the opportunity to be in the same room with industry leaders is crucial.
—
Matt Minton, Variety, 23 Apr. 2025
In 2016, Pope Francis called Farrell to the Vatican to serve as the vicar general of administration and moderator of the Roman Curia, the administrative arm of the Holy See and the central governing body of the Catholic Church, according to his biography.
—Bill Hutchinson, ABC News, 21 Apr. 2025
These changes would have severely curtailed the ability of the moderator and the audience to question the foreign minister.
—Josh Hammer, MSNBC Newsweek, 21 Apr. 2025
Last March, Emmy winner and former The View moderator Rosie O’Donnell took to Instagram to confirm she'd been cast in And Just Like That season 3 as a character named Mary.
—Randall Colburn, EW.com, 16 Apr. 2025
See All Example Sentences for moderator
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Matt Minton, Variety, 23 Apr. 2025
In 2016, Pope Francis called Farrell to the Vatican to serve as the vicar general of administration and moderator of the Roman Curia, the administrative arm of the Holy See and the central governing body of the Catholic Church, according to his biography.
—Bill Hutchinson, ABC News, 21 Apr. 2025
These changes would have severely curtailed the ability of the moderator and the audience to question the foreign minister.
—Josh Hammer, MSNBC Newsweek, 21 Apr. 2025
Last March, Emmy winner and former The View moderator Rosie O’Donnell took to Instagram to confirm she'd been cast in And Just Like That season 3 as a character named Mary.
—Randall Colburn, EW.com, 16 Apr. 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 5 May. 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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