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mod·er·a·tor
 moderator
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- pronunciation:
- ma
d
reI
tr
- features:
- Word Combinations (noun)
| part of speech: |
noun |
| definition 1: |
someone who moderates, such as the leader of a discussion group or the chairperson at a meeting.
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| definition 2: |
a substance, such as graphite or heavy water, used in nuclear reactors to slow down neutrons, thus increasing the probability of fission.
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| related words: |
buffer, chairman |
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| derivation: |
moderatorial (adj.) |
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