| NOUN | cognition | law of definite proportions, law of constant proportion | (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight |
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| Meaning | (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight. | |
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| Synonym | law of constant proportion | |
| Category | chemistry, chemical science | The science of matter |
| Broader | law, law of nature | A generalization that describes recurring facts or events in nature |
| Catalan | llei de les proporcions definides | |
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