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
During a panel discussion later that day, Brown opened up to Zumba's CMO Carolina Moraes and moderator Louise Gannon about her introduction to dance as a child.
—
Latoya Gayle, PEOPLE, 13 June 2026
When the moderator of one debate, a conservative talk show host, sent Marx a letter pressing him for specifics on his background, Marx skipped the event and organized a rally instead.
—Seth Klamann, Denver Post, 11 June 2026
He was scheduled for an hour-long interview with Kristen Welker, the moderator of Meet the Press, in the same barn.
—Aidan McLaughlin, Vanity Fair, 11 June 2026
That might explain the existence of a subreddit about developing websites using WordPress that has just one user, who is also its sole poster and moderator.
—Will Oremus, The Atlantic, 10 June 2026
See All Example Sentences for moderator
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Latoya Gayle, PEOPLE, 13 June 2026
When the moderator of one debate, a conservative talk show host, sent Marx a letter pressing him for specifics on his background, Marx skipped the event and organized a rally instead.
—Seth Klamann, Denver Post, 11 June 2026
He was scheduled for an hour-long interview with Kristen Welker, the moderator of Meet the Press, in the same barn.
—Aidan McLaughlin, Vanity Fair, 11 June 2026
That might explain the existence of a subreddit about developing websites using WordPress that has just one user, who is also its sole poster and moderator.
—Will Oremus, The Atlantic, 10 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 17 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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