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 movement of molecules across a membrane against the concentration gradient, from an area of...

Subject:

kidney failure that develops suddenly.

Subject:

a state in which the body has become dependent on a chemical substance in order to function.

Subject:

a molecule that is converted to adenosine triphosphate (ATP) for energy storage.

Subject:

a molecule that stores large amounts of energy that can be used for metabolic activity.

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