1. people who preside over meetings, discussions, or debates to ensure they run smoothly and fairly
2. people who monitor and control online forums, chat rooms, or social media platforms
Usage: internet/technology
3. substances that slow down neutrons in nuclear reactors
Usage: nuclear physics

Examples

• The debate moderators asked tough questions to both candidates.
• Forum moderators removed inappropriate posts from the discussion board.
• The town hall meeting had two moderators to keep the discussion on track.
• Online moderators work around the clock to maintain community standards.
• The nuclear reactor uses water as one of its moderators.
• Experienced moderators help prevent arguments from getting out of hand.