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.

the sphere or region of the Earth that consists of water, which is found as liquid water (...

a model of a gas that obeys the ideal gas law equations under all conditions.

a law defining the relationship between pressure, volume, temperature and moles of a gas....

the measurements taken by the researcher. The variable that is not dependent on another variable...

compounds that are different colours in acid and alkali environments.

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