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.

a zigzag, stepped line on the periodic table that separates the metals from the non-metals.

amu

atomic mass unit – measured as 1 twelfth of a C-12 atom.

the absence of oxygen.

atoms that gain electrons and become negative ions.

the electrode at which oxidation occurs.

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