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.

a molecule that is so big that we can see it.

Subject:

recently living organisms or their metabolic products, used as source of fuel

Subject:

regions in particular geographical locations with similar climates and vegetation types.

Subject:

that part of the Earth where all living organisms occur.

the part of the Earth and its atmosphere in which life can exist.

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