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 natural, hydrated ore of aluminium Al2O3∙xH2O.

electrons that have been emitted from the nucleus of an atom of a radioactive element.

compounds that consist of only two types of atoms.

the energy released when a nucleus is formed from its component particles.

a molecule that is so big that we can see it.

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