The study and knowledge of the atmosphere, its properties, composition, and characteristics; the science of understanding how air works.
From aero- (air) and gnosis (knowledge). An older or more specialized term related to what we now call atmospheric science or meteorology.
Aerognosy is an old-fashioned but beautiful term for studying the air itself—early scientists used it when they were first figuring out that air was a substance with weight, pressure, and composition!
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