Definition of stoichiometry in English:

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Pronunciation: /ˌstoikēˈämətrē/


The relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
Example sentences
  • This relationship, called the stoichiometry of a reaction, can be used to predict how much reactant is needed to create a certain amount of product or to predict how much of the product will be formed from a certain amount of reactant.
  • The relative stoichiometry of the different sequence copies in the parental lines was also studied.
  • Finally, the net reaction may be exothermic or (more commonly) endothermic, depending on reaction stoichiometry.


Early 19th century: from Greek stoikheion 'element' + -metry.

For editors and proofreaders

Syllabification: stoi·chi·om·e·try

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