One of the mysteries of the English language finally explained.
1Of or relating to a method for measuring the density or relative density of a liquid, especially milk and beer, by means of a set of small hollow spheres or ‘beads’.
2Of or relating to the measurement of the mechanical properties of air and other gases; (in later use chiefly) of or relating to the measurement of air pollutants.
Early 19th century; earliest use found in The Farmer's Magazine. From aero- + -metric, after aerometer, aerometry.
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