- moderator - any substance used to slow down neutrons in nuclear reactors
--1 is a kind of inhibitor
--1 is a part of nuclear reactor, reactor
--1 has particulars: heavy water, deuterium oxide- moderator - in the Presdyterian church, the officer who presides over a synod or general assembly
--2 is a kind of presiding officer
- moderator - someone who presides over a forum or debate
--3 is a kind of presiding officer
Derived form: verb moderate1 - moderator - someone who mediates disputes and attempts to avoid violence
--4 is a kind of mediator, go-between, intermediator, intermediary, intercessor
--4 has particulars: modifierDerived form: verb moderate6 - moderator - in the Presdyterian church, the officer who presides over a synod or general assembly