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.

Subject:

the flooding of land, such as the flooding that happens when dams are constructed.

Subject:

non-indigenous species which reproduce and spread more rapidly than indigenous species. This...

Subject:

not under our conscious control.

Subject:

substance used to test for the presence of starch. It is a mixture of elemental iodine,...

ion
Subject:

an atom or a group of atoms that has gained or lost one or more electrons and so has an electric...

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