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
After a warm Thursday morning introduction from moderator Whoopi Goldberg ahead of Biden's live interview with all six View cohosts, the panelists inquired about a long list of developments that unfolded across the last year — including Harris' devastating loss to Trump.
—
Joey Nolfi Published, EW.com, 8 May 2025
During a panel on the subject at the PEN America World Voices Festival on May 2 in New York City, the author spoke with writer André Aciman (Call Me By Your Name) and moderator Soraya Nadia McDonald about her experience seeing her books developed for the big screen.
—Carly Tagen-Dye, People.com, 5 May 2025
The tour will continue with other special guests and moderators, concluding in London on June 4.
—Caché McClay, USA Today, 2 May 2025
O’Reilly also debated fellow moderator Smith as well as guests such as James Carville during the two-hour forum that also featured questions from a live studio audience and viewers who submitted questions via social media.
—Julia Mueller, The Hill, 1 May 2025
See All Example Sentences for moderator
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Joey Nolfi Published, EW.com, 8 May 2025
During a panel on the subject at the PEN America World Voices Festival on May 2 in New York City, the author spoke with writer André Aciman (Call Me By Your Name) and moderator Soraya Nadia McDonald about her experience seeing her books developed for the big screen.
—Carly Tagen-Dye, People.com, 5 May 2025
The tour will continue with other special guests and moderators, concluding in London on June 4.
—Caché McClay, USA Today, 2 May 2025
O’Reilly also debated fellow moderator Smith as well as guests such as James Carville during the two-hour forum that also featured questions from a live studio audience and viewers who submitted questions via social media.
—Julia Mueller, The Hill, 1 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 21 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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