How did hydrogen get its name?
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The name "hydrogen" is derived from Greek words meaning "maker of water." This name was coined by the French chemist Antoine-Laurent Lavoisier as hydrogène.1
The term reflects the chemical observation that water is generated when hydrogen undergoes combustion with oxygen. Before this naming convention was established, the element was often referred to by names such as "flammable air" or the "flammable principle," as researchers like Henry Cavendish had previously identified it as a distinct, combustible gas.21