[ stoi-kee-om-i-tree ]
/ ˌstɔɪ kiˈɒm ɪ tri /


the calculation of the quantities of chemical elements or compounds involved in chemical reactions.
the branch of chemistry dealing with relationships of combining elements, especially quantitatively.
Also stoi·chei·om·e·try [stoi-kahy-om-i-tree] /ˌstɔɪ kaɪˈɒm ɪ tri/.

Origin of stoichiometry

1800–10; < Greek stoicheîo(n) (see stoichiometric) + -metry Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for stoichiometry


stoicheiometry or stoechiometry

/ (ˌstɔɪkɪˈɒmɪtrɪ) /


the branch of chemistry concerned with the proportions in which elements are combined in compounds and the quantitative relationships between reactants and products in chemical reactions

Word Origin for stoichiometry

C19: from Greek stoikheion element + -metry
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for stoichiometry

[ stoi′kē-ŏmĭ-trē ]


Calculation of the quantities of reactants and products in a chemical reaction.
The quantitative relationship between reactants and products in a chemical reaction.

Other words from stoichiometry

stoi′chi•o•metric (-ə-mĕtrĭk) adj.stoi′chi•o•metri•cal•ly adv.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.