Dictionary

law of definite proportions

Definition of LAW OF DEFINITE PROPORTIONS

:  a statement in chemistry: every definite compound always contains the same elements in the same proportions by weight
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First Known Use of LAW OF DEFINITE PROPORTIONS

1830
Medical Dictionary

law of definite proportions

noun law of def·i·nite pro·por·tions \-ˈdef-(ə-)nət-prə-ˈpr-shənz\

Medical Definition of LAW OF DEFINITE PROPORTIONS

:  a statement in chemistry: every definite compound always contains the same elements in the same proportions by weight

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