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:

an almost self-contained ecological unit.

Subject:

all the different ecosystems with their numerous and varied organisms.

Subject:

responsible, low impact, usually small- scale travel to protected, unspoilt, natural areas and...

Subject:

outer body tissue layer that forms the epithelium and nervous tissue.

Subject:

a parasite that lives on the outside of its host.

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