- Lavoisier,Antoine Laurent
La·voi·sier (lə-vwäʹzē-ā', lä-vwä-zyāʹ), Antoine Laurent. 1743-1794.
French chemist who is regarded as the founder of modern chemistry. He isolated the major components of air, disproved the phlogiston theory by determining the role of oxygen in combustion, and organized the classification of compounds. Lavoisier was executed during the Reign of Terror.
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