1. [ noun ] (chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation
Synonyms: law_of_multiple_proportions
Related terms: law chemistry
2. [ noun ] (chemistry and physics) law stating that the pressure exerted by a mixture of gases is the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture is the pressure it would exert if it occupied the same volume alone
Synonyms: law_of_partial_pressures Dalton's_law_of_partial_pressures
Related terms: law physics chemistry