The branch of chemistry and science dealing with the measurement, analysis, and study of the properties of gases.
From gas plus -metry (from Greek metria 'measuring'). Coined in the 18th century during the Scientific Revolution when gas laws and properties were being actively studied.
Gasometry was essential to proving the ideal gas law—scientists like Boyle and Charles used gasometric methods to discover that all gases behave predictably, which became one of chemistry's foundation stones.
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