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.

contains an unpaired electron on a carbon atom bonded to two other carbon atoms.

a material that has intermediate electrical conductivity that can be changed and controlled. It...

an electron pair in which each atom provides one electron for the bonding pair.

Système International d’Unités. Internationally agreed coherent system of units: distance in...

aliphatic radical group attached to a main, straight chain or benzene ring structure.

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