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:

weathering of rock as a result of chemical changes in the rock brought about through processes...

Subject:

dry, hot wind that blows down the slopes of the Rocky mountains in Canada

Subject:

a group of manmade compounds, not found in nature, that contain fluorine, chlorine and carbon...

Subject:

volcanic cone with steep slopes and successive layers of ash and cinders and broken rock; there...

Subject:

a line that divides Earth into the parts that are experiencing daylight and the parts that are...

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