someone who leads a discussion in a group and tells each person when to speak : someone who moderates a meeting or discussion. Source: ...
b. One who presides over a meeting, forum, or debate. 2. The officer who presides over a synod or general assembly of the Presbyterian Church. 3. Physics A ...
An arbitrator or mediator:.
In online forums and other online discussion spaces the
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 ...