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 physical digestion) the breaking down of food into smaller pieces using mechanical...

Subject:

(also called the pith) the central part of the stem that consists of large, thin-walled...

Subject:

the part of the hindbrain that controls autonomic functions such as breathing, digestion, heart...

Subject:

(also called pith rays) sections of the medulla that occur between the vascular bundles.

Subject:

a type of nuclear division during which reproductive cells divide to produce gametes. The...

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