Definitions for: Moderator

[n] someone who mediates disputes and attempts to avoid violence
[n] someone who presides over a forum or debate
[n] any substance used to slow down neutrons in nuclear reactors

Webster (1913) Definition: Mod"er*a`tor, n. [L.: cf. F. mod['e]rateur.]
1. One who, or that which, moderates, restrains, or pacifies.
--Sir W. Raleigh.

Angling was . . . a moderator of passions. --Walton.

2. The officer who presides over an assembly to preserve
order, propose questions, regulate the proceedings, and
declare the votes.

3. 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. A mechamical arrangement for regulating motion in a
machine, or producing equality of effect.

See Also: deuterium oxide, go-between, heavy water, inhibitor, intermediary, intermediator, mediator, modifier, nuclear reactor, presiding officer, reactor

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