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:

a microscopic hair-like extension of the cell membrane of the epithelial cells forming the outer...

Subject:

a cell of low pressure that develops at the polar front

Subject:

a ridge in the ocean floor caused by divergence of tectonic plates

Subject:

states that a line drawn parallel to one side of a triangle divides the other two sides...

(also called a medium shot) a shot of a human subject from the waist upwards and including the...

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