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:

a drug that inhibits (slows down) the action of the nervous system.

Subject:

tissue that covers the outside of an organism.

Subject:

the process of removing salt and other minerals from seawater, to make it drinkable.

Subject:

the conversion of previously productive land into desert.

Subject:

remove starch from the leaves of a plant by preventing photosynthesis from occurring (for a few...

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