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1. (n.) moderator
a person or thing that moderates.
2. moderator
a person who presides over a group event or meeting.
3. moderator
a substance, as graphite or heavy water, used to slow neutrons to speeds at which they are more efficient in causing fission.
Etymology: (1350–1400)
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| Definition of 'moderator' |
Princeton's WordNet |
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1. (noun) moderator
any substance used to slow down neutrons in nuclear reactors
2. (noun) moderator
in the Presbyterian church, the officer who presides over a synod or general assembly
3. (noun) moderator
someone who presides over a forum or debate
4. (noun) moderator
someone who mediates disputes and attempts to avoid violence
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| Definition of 'moderator' |
Webster Dictionary |
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1. (noun) moderator
one who, or that which, moderates, restrains, or pacifies
2. (noun) moderator
the officer who presides over an assembly to preserve order, propose questions, regulate the proceedings, and declare the votes
3. (noun) moderator
in the University of Oxford, an examiner for moderations; at Cambridge, the superintendant of examinations for degrees; at Dublin, either the first (senior) or second (junior) in rank in an examination for the degree of Bachelor of Arts
4. (noun) moderator
a mechamical arrangement for regulating motion in a machine, or producing equality of effect
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Definitions of moderator 
