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:

layers making up a GIS

Subject:

in any right-angled triangle the sum of the squares on the two right-angle sides is equal to the...

Subject:

(also called classical probability) the calculated probability of an event occurring; or the...

the amount of products that are formed in a chemical reaction when all the reactants react and...

Subject:

zone of hottest temperatures, where the sun's rays are overhead

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