STOICHIOMETRY
stoichiometry
(noun) (chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers)
Source: WordNet® 3.1
Etymology
Noun
stoichiometry (countable and uncountable, plural stoichiometries)
(uncountable, chemistry) The study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
(countable, chemistry) The quantitative relationship between the reactants and products of a specific reaction or equation.
Source: Wiktionary
Stoi`chi*om"e*try, n. Etym: [Gr. -metry.]
Definition: The art or process of calculating the atomic proportions,
combining weights, and other numerical relations of chemical elements
and their compounds.
Source: Webster’s Unabridged Dictionary 1913 Edition