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 main blood vessel that returns deoxygenated blood from the head and thorax to the right...

Subject:

water that is found on the surface of the earth, e.g. in rivers, streams, and lakes etc.

Subject:

a form of environmentally-friendly farming in which farmland and soil are cared for so that it...

Subject:

a relationship between two different organisms, of different species, from which at least one of...

Subject:

the site where a nerve impulse is transmitted from one neuron to the next. There is no physical...

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