moderator

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moderator

1. Presbyterian Church a minister appointed to preside over a Church court, synod, or general assembly
2. a presiding officer at a public or legislative assembly
3. 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
4. an examiner at Oxford or Cambridge Universities in first public examinations
5. (in Britain and New Zealand) one who is responsible for consistency of standards in the grading of some educational assessments
6. a person who moniters the conversations in an on-line chatroom for bad language, inappropriate content, etc

moderator

[′mäd·ə- ‚rād·ər]
(nucleonics)
The material used in a nuclear reactor to moderate or slow down neutrons from the high velocities at which they are created in the fission process.

moderator

A person, or small group of people, who manages a moderated mailing list or Usenet newsgroup. Moderators are responsible for determining which email submissions are passed on to the list or newsgroup.