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:

a line on a map that joins all places at the same altitude

Subject:

ploughing across the slope or around the hill

Subject:

transfer of heat energy through movement of air molecules

Subject:

rain that is produced by strong convection currents in the atmosphere; rain that is caused by...

Subject:

thunderstorms associated with convection rain that occur when temperatures are high and air...

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