- a person or thing that moderates.
- a person who presides over a panel discussion on radio or television.
- a member of an online message board or electronic mailing list with privileges and responsibilities to approve or reject messages and uphold the terms of service.
- a presiding officer, as at a public forum, a legislative body, or an ecclesiastical body in the Presbyterian Church.
- Physics. a substance, as graphite or heavy water, used to slow neutrons to speeds at which they are more efficient in causing fission.
Origin of moderator
Examples from the Web for moderator
Moderator Jan Jarboe Russell, an author and writer for Texas Monthly, asked Rep. Castro whether politics was in his blood.
Moderator Alicia Menendez, an anchor on the Fusion network, asked about the influence of her children.
As a moderator was keen to point out, his name remains on the bill as a sponsor.Watch a Republican Try to Duck the Abortion Ban He Cosponsored
October 16, 2014
After the laughter subsided, the moderator pressed, “What else do you know about her, any impressions of her?”Voters Don't Care About DC's Obsessions
September 11, 2014
“This is the biggest day in the history of The View,” current moderator Whoopi Goldberg announced at the top of the hour.Barbara Walters’s Final ‘The View’: A Tearful Farewell Befitting an Icon
May 16, 2014
The moderator had some difficulty in restoring order to the hilarious meeting.Cy Whittaker's Place
Joseph C. Lincoln
“All in favor of that motion will say aye,” said the moderator.
“It is from his excellency, the governor,” said the sheriff, bowing to the moderator.
"The members o' this court will address the moderator," he said sternly.St. Cuthbert's
Robert E. Knowles
He has become almost insupportable since they have named him for Moderator.Coniston, Complete
- a person or thing that moderates
- Presbyterian Church a minister appointed to preside over a Church court, synod, or general assembly
- a presiding officer at a public or legislative assembly
- a material, such as heavy water or graphite, used for slowing down neutrons in the cores of nuclear reactors so that they have more chance of inducing nuclear fission
- an examiner at Oxford or Cambridge Universities in first public examinations
- (in Britain and New Zealand) one who is responsible for consistency of standards in the grading of some educational assessments
- a person who monitors the conversations in an on-line chatroom for bad language, inappropriate content, etc
Word Origin and History for moderator
late 14c., "ruler, governor," from Latin moderator "manager, ruler, director," literally "he who moderates," from moderatus (see moderate (adj.)). Meaning "one who acts as an umpire" is from 1560s. Fem. form moderatrix attested from 1530s.
- A substance, such as graphite, water, or heavy water, placed in a nuclear reactor to slow neutrons down to speeds at which they are more likely to be captured by fissionable components of a fuel (such as uranium-235) and less likely to be absorbed by nonfissionable components of a fuel (such as uranium-238). Also called neutron moderator See also slow neutron.