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:

minute dust and salt particles found in the troposphere

a chemical reaction where two molecules combine to form one single molecule. The elimination of...

shows the structure of the molecule but not all the bonds between every atom.

Subject:

(also called vascular tissue) the tissues that transport water and dissolved food in a...

Subject:

transfer of heat energy through contact

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