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:

rhythmical wave-like muscular contractions of a duct in order to cause movement of substances...

Subject:

the second set of teeth formed in mammals. In humans there are thirty-two permanent teeth.

pH
Subject:

a measure of acidity or alkalinity.

Subject:

the engulfment of food particles with pseudopodia to form a food vacuole inside the cell. This...

Subject:

the mammalian throat.

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