law of definite proportions
noun phrase
: a statement in chemistry: every definite compound always contains the same elements in the same proportions by weight
Cite this Entry
“Law of definite proportions.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/law%20of%20definite%20proportions. Accessed 4 Mar. 2025.
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law of definite proportions
noun
law of def·i·nite pro·por·tions
-ˈdef-(ə-)nət-prə-ˈpȯr-shənz 
: a statement in chemistry: every definite compound always contains the same elements in the same proportions by weight
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