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:

pollutants that accumulate over the years in water and on the land and cause serious problems....

chemical calculations that involve amounts of different chemicals.

the area of chemistry that deals with the relative quantities of reactants and products in...

Subject:

two bean-shaped guard cells surrounding a pore in the epidermis of a leaf that allow gases to...

Subject:

a muscular sac-like organ in which food is mixed with gastric juice.

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