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Why did Antoine Lavoisier name hydrogen water producer?

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Portrait of French chemist Antoine Laurent Lavoisier, shown in formal 18th-century attire with a white wig and ruffled cravat, looking slightly to his left. — Antoine Lavoisier Antoine Lavoisier.

Antoine-Laurent Lavoisier named the element hydrogen "water producer" because of his discovery that water is a chemical compound formed by the combustion of oxygen and the gas previously known as "inflammable air".12

Lavoisier coined the French term hydrogène—derived from Greek words meaning "maker of water"—to reflect this chemical relationship. This naming was part of his broader effort to establish a modern, systematic nomenclature for chemical substances, which helped replace the outdated phlogiston theory during the 18th-century chemical revolution.1342