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:

magma that reaches the Earth's surface

Subject:

(also called a shield volcano) a non-explosive volcano consisting of several layers of fluid...

Subject:

lava that extrudes onto Earth's surface, forming a sheet of lava

Subject:

when excessive rainfall washes nutrients from the A horizon towards the bottom of the soil

Subject:

the side of the mountain that faces away from the sea

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