Glossary

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Looking for a quick definition?

We’ve got loads of key subject terms in our subject glossaries. There are three ways of finding what you are looking for:

  • First click on the letters of the alphabet to browse for terms.
  • Select a subject from the drop-down menu above to filter the terms by Subject.
  • Or lastly, type the term you are looking for into the search box.

EXAMPLES

Here are some examples of the kinds of definitions you’ll find on this page.

a reaction that does not start on its own.

a laboratory where the chain reaction is steady and controlled so that only one neutron is...

the nucleus is divided into fragments of roughly equal size.

light nuclei join together to form heavier nuclei.

particles in the nucleus (protons and neutrons).

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