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(chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers)

(chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers)

The art or process of calculating the atomic proportions, combining weights, and other numerical relations of chemical elements and their compounds.

The determination of the proportions in which elements combine to form compounds; also the determination of the atomic weight of the elements. [Gr.]