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
How generative AI changes moderator bots remains to be seen.
—
John Lalor, The Conversation, 21 Mar. 2025
It will be held from 7 to 8:30 p.m. Thursday, March 20, at the Naperville Municipal Center, 400 S. Eagle St.
During the event, candidates will respond to four rounds of questions as well as some rapid-fire questions posed by the moderator.
—Michelle Mullins, Chicago Tribune, 12 Mar. 2025
And team ownership was slammed for the second straight year on the NFLPA Players’ Report Card last week for poor facilities, food, and a team plane with ash trays but no Wi-Fi.
CNBC reporter Contessa Brewer, who served as moderator, asked if AI might someday replace coaching.
—Bill Speros, Boston Herald, 7 Mar. 2025
Building robust trust-and-safety capabilities isn’t cheap or simple—especially for smaller platforms that can’t hire hundreds of moderators and legal experts.
—Tamar Mitts, TIME, 6 Mar. 2025
See All Example Sentences for moderator
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John Lalor, The Conversation, 21 Mar. 2025
It will be held from 7 to 8:30 p.m. Thursday, March 20, at the Naperville Municipal Center, 400 S. Eagle St.
During the event, candidates will respond to four rounds of questions as well as some rapid-fire questions posed by the moderator.
—Michelle Mullins, Chicago Tribune, 12 Mar. 2025
And team ownership was slammed for the second straight year on the NFLPA Players’ Report Card last week for poor facilities, food, and a team plane with ash trays but no Wi-Fi.
CNBC reporter Contessa Brewer, who served as moderator, asked if AI might someday replace coaching.
—Bill Speros, Boston Herald, 7 Mar. 2025
Building robust trust-and-safety capabilities isn’t cheap or simple—especially for smaller platforms that can’t hire hundreds of moderators and legal experts.
—Tamar Mitts, TIME, 6 Mar. 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 28 Mar. 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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