law of multiple proportions

from WordNet (r) 3.0 (2006)
law of multiple proportions
    n 1: (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 [syn: {law of multiple
         proportions}, {Dalton's law}]
    

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