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.

(also called allotropism) the property of some chemical elements to exist in two or more...

Subject:

a deduction from the value of an invoice by a seller to cover damages or shortages

mixtures of different metals.

a figure of speech in which a writer makes a reference to person or text she or he assumes the...

the nuclei of helium atoms: He2+

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