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
The moderator and the three speakers consisted of: Moderator: Dr. Kilian M Pohl, AI4MH Lead, Professor of Psychiatry and Behavioral Sciences (Major Labs and Incubator) and, by courtesy, of Electrical Engineering.
—
Lance Eliot, Forbes.com, 2 June 2025
The tension at Dorchester’s packed Prince Hall started as the moderator, Yawu Miller of Flipside News, was posing a rather loaded question about immigration to the four candidates taking part in the second forum of the mayoral race, Kraft, Mayor Michelle Wu, Domingos DaRosa, and Robert Cappucci.
—Gayla Cawley, Boston Herald, 29 May 2025
Panel moderator Mohammed Ali (Mo) Naqvi, the acclaimed filmmaker and Crescent Collective co-founder, who also serves as chair of the Pakistan Oscar selection committee, set the tone with a pointed observation about narrative liberation.
—Naman Ramachandran, Variety, 22 May 2025
On June 6, Chanel ambassador Riley Keough and her creative partner Gina Gammell will join moderator Margaret Zhang for an in-person conversation at Metrograph in downtown New York.
—Kristen Tauer, Footwear News, 15 May 2025
See All Example Sentences for moderator
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Lance Eliot, Forbes.com, 2 June 2025
The tension at Dorchester’s packed Prince Hall started as the moderator, Yawu Miller of Flipside News, was posing a rather loaded question about immigration to the four candidates taking part in the second forum of the mayoral race, Kraft, Mayor Michelle Wu, Domingos DaRosa, and Robert Cappucci.
—Gayla Cawley, Boston Herald, 29 May 2025
Panel moderator Mohammed Ali (Mo) Naqvi, the acclaimed filmmaker and Crescent Collective co-founder, who also serves as chair of the Pakistan Oscar selection committee, set the tone with a pointed observation about narrative liberation.
—Naman Ramachandran, Variety, 22 May 2025
On June 6, Chanel ambassador Riley Keough and her creative partner Gina Gammell will join moderator Margaret Zhang for an in-person conversation at Metrograph in downtown New York.
—Kristen Tauer, Footwear News, 15 May 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 6 Jun. 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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