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:

(also called an extinction event) the sudden dying out of large number of species over a short...

Subject:

(also called mass wasting) the transfer of rock debris or soil down a slope under the influence...

the sum of the number of protons and neutrons (the nucleons) in the nucleus of an atom. It...

Subject:

(also called mass movement) the transfer of rock debris or soil down a slope under the influence...

calculating the mass of a substance, given the mass of a reactant or product.

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