Definition of Proust, Joseph Louis in English:

Proust, Joseph Louis

Syllabification: Proust, Joseph Louis
Pronunciation: /pro͞ost
 
/
( 1754–1826), French analytical chemist. He proposed the law of constant proportions, demonstrating that any pure sample of a chemical compound (such as an oxide of a metal) always contains the same elements in fixed proportions.

Definition of Proust, Joseph Louis in:

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