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:

biological, chemical, or physical agent that stimulates a characteristic function or causes a...

Subject:

small groups of cells found in the pancreas that secrete the hormones insulin and glucagon.

Subject:

two or more forms of a particular  chemical element, that have the same number of protons in the...

Subject:

the middle part of the mammalian small intestine.

Subject:

(also called the carina) in birds is an extension of the sternum (breastbone) which runs along...

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