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 very cold zone in an ocean, dam or a lake, located below the range of effective light...

Subject:

unicellular organisms that do not have a proper nucleus or membrane bound organelles.

Subject:

an enzyme which acts on proteins.

Subject:

an organic compound that always contains the elements carbon, hydrogen, oxygen and nitrogen and...

Subject:

unicellular organisms that contain a true nucleus and membrane bound organelles. All protists...

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