noun Someone who moderates. An arbitrator or mediator. The chair or president of a meeting, etc. A person who enforces the rules of a discussion forum by deleting posts, banning users, etc.
noun An arbitrator or mediator.
noun The chair or president of a meeting, etc.
noun A person who enforces the rules of a discussion forum by deleting posts, banning users, etc.
noun The person who presides over a synod of a Presbyterian church.
noun A substance (often water or graphite) used to decrease the speed of fast neutrons in a nuclear reactor and hence increase likelihood of fission.
noun A device used to deaden some of the noise from a firearm, although not to the same extent as a suppressor or silencer.
noun An examiner at Oxford and Cambridge universities.