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 chairperson 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 commander-in-chief and the former moderator for The View have traded jabs in a feud that has lasted for decades.
—
Wesley Stenzel, Entertainment Weekly, 20 June 2026
The former daytime talk show host joined The View in 2007 as the moderator, but left after only one season.
—Armando Tinoco, Deadline, 19 June 2026
These types of platforms employ an AI moderator that probes rather than validates and delivers a professional insights report, all within minutes.
—Stefan Pollack, Forbes.com, 18 June 2026
None of the candidates went after Cherfilus-McCormick’s issues, which came up only through a moderator’s question.
—Anthony Man, Sun Sentinel, 18 June 2026
See All Example Sentences for moderator
Examples are automatically compiled from online sources to
show current usage.
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Wesley Stenzel, Entertainment Weekly, 20 June 2026
The former daytime talk show host joined The View in 2007 as the moderator, but left after only one season.
—Armando Tinoco, Deadline, 19 June 2026
These types of platforms employ an AI moderator that probes rather than validates and delivers a professional insights report, all within minutes.
—Stefan Pollack, Forbes.com, 18 June 2026
None of the candidates went after Cherfilus-McCormick’s issues, which came up only through a moderator’s question.
—Anthony Man, Sun Sentinel, 18 June 2026
See All Example Sentences for moderator
Cite this Entry
“Moderator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moderator. Accessed 23 Jun. 2026.
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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