stoichiometry

stoi·chi·om·e·try

noun \ˌstȯi-kē-ˈä-mə-trē\

Definition of STOICHIOMETRY

1

: a branch of chemistry that deals with the application of the laws of definite proportions and of the conservation of mass and energy to chemical activity

2

a : the quantitative relationship between constituents in a chemical substance

b : the quantitative relationship between two or more substances especially in processes involving physical or chemical change

Origin of STOICHIOMETRY

Greek stoicheion element (from stoichos row) + English -metry; akin to Greek steichein to walk, go — more at stair

First Known Use: 1807

stoi·chi·om·e·try

noun \ˌstȯi-kē-ˈäm-ə-trē\   (Medical Dictionary)

plural ; stoi·chi·om·e·tries

Medical Definition of STOICHIOMETRY

1

: a branch of chemistry that deals with the application of the laws of definite proportions and of the conservation of mass and energy to chemical activity

2

a : the quantitative relationship between constituents in a chemical substance b : the quantitative relationship between two or more substances especially in processes involving physical or chemical change

—stoi·chi·o·met·ric \-kē-ə-ˈme-trik\ (audio pronunciation) adjective

stoichiometry

noun    (Concise Encyclopedia)

Determination of the proportions (by weight or number of molecules) in which elements or compounds react with one another. The rules for determining stoichiometric relationships are based on the laws of conservation (see conservation law) of mass and energy and the law of combining weights (see equivalent weight) or volumes. The tools used are chemical formulas, chemical equations, atomic weights, and molecular weights or formula weights.