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:

the outermost layer of the plant cell wall that forms the contact surface between adjacent plant...

Subject:

simple chemical substances needed by the body in relatively small amounts for normal growth and...

Subject:

organelles in which cellular respiration takes place to produce ATP to supply cells with energy...

Subject:

a type of nuclear division during which somatic cells divide into new cells for growth or to...

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