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 part of the atmosphere that contains the ozone layer and is about 10 km above the Earth's...

Subject:

the surface on which an organism lives and gets its food.

Subject:

a plant with thick, fleshy leaves in which it stores water.

Subject:

to be unable to breathe, or to have a lack of oxygen.

Subject:

(SO2) a colourless gas that smells of rotten eggs or burnt matches and is produced by...

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