a person or thing that moderates; specif.,
- a person who presides at a town meeting, debate, assembly, etc.
- the presiding officer of a governing body, as of the Presbyterian Church
- a substance, as graphite or heavy water, used to slow down high-energy neutrons in a nuclear reactor
Origin of moderatorMiddle English moderatour from Classical Latin moderator
- One that moderates, as:a. One that arbitrates or mediates.b. One who presides over a meeting, forum, or debate.
- The officer who presides over a synod or general assembly of the Presbyterian Church.
- Physics A substance, such as water or graphite, used in a nuclear reactor to decrease the speed of fast neutrons and increase the likelihood of fission.
- someone who moderates
- the person who presides over a synod of a Presbyterian Church
- (physics) a substance (often water or graphite) used to decrease the speed of fast neutrons in a nuclear reactor and hence increase likelihood of fission
- a device used to deaden some of the noise from a firearm, although not to the same extent as a suppressor or silencer.
- (UK) An examiner at Oxford and Cambridge universities.
- (Ireland) At the University of Dublin, either the first (seni) or second (juni) in rank in an examination for the degree of Bachelor of Arts.
- A mechanical arrangement for regulating motion in a machine, or producing equality of effect.
From Latin moderator.