law of definite proportions

noun phrase

Definition of law of definite proportions

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

First Known Use of law of definite proportions

1830, in the meaning defined above

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The first known use of law of definite proportions was in 1830

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law of definite proportions

noun
law of def·​i·​nite pro·​por·​tions | \ -ˈdef-(ə-)nət-prə-ˈpȯr-shənz How to pronounce law of definite proportions (audio) \

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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