# stoichiometry

> English word · Noun · IPA /ˌstɔɪ.kiˈɒm.ə.tɹi/ · frequency rank #80,004

## Definitions
1. The study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
2. The quantitative relationship between the reactants and products of a specific reaction or equation.

## Etymology
Coined as German Stöchiometrie by Jeremias Benjamin Richter in 1792. From Ancient Greek στοιχεῖον (stoikheîon, “element”) + -metry.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/stoichiometry