Glossary · term

Moderator

Nuclear & Particle

Definition
A material — water, graphite — that slows fast neutrons down so uranium-235 can capture them. Every thermal reactor has one.
Aliases
moderated, moderating, slowed neutrons
Domain
Nuclear & Particle

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From the Glossary database in Notion, last edited 2026-08-17. This page is the row, rendered by the build; nothing on it is written by hand.