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:

reactions in which large complex molecules are broken down to form smaller,simpler molecules;...

Subject:

a molecule that accelerates (speeds up) a chemical reaction, by lowering its activation energy,...

Subject:

the series of activities that takes place in a cell leading to its division and duplication (...

Subject:

the way in which cells multiply to form new cells.

Subject:

a biological membrane that separates the interior of all cells from the outside environment.

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