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 the tertiary sector) sector of the economy in which economic activities are based...

Subject:

vertical shafts for mining are constructed leading down from the Earth's crust

Subject:

when soil is removed in layers due to water flowing over the land in a sheet

Subject:

(also called overland flow) rainwater that flows across the land, not in a specific river...

Subject:

(also called a lava dome) non-explosive volcano consisting of several layers of fluid lava

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