law of reciprocal proportions is a noun meaning "(chemistry) law stating that the proportions in which two elements separately combine with a third element are also the proportions in which they combine together". It carries one recorded sense.
(chemistry) law stating that the proportions in which two elements separately combine with a third element are also the proportions in which they combine together
chemistry
Definitions, synonyms and semantic relations for law of reciprocal proportions come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.