A device that analyzes the composition or properties of air and atmospheric gases.
From Greek 'atmos' (vapor/air) + '-lyzer' (from Greek 'lysis' meaning breaking down). Formed in the 19th century as scientific instruments for studying atmospheric composition became common.
This is part of a whole family of 'atmo-' words that scientists invented during the Industrial Revolution when they became obsessed with measuring and understanding every aspect of the air around us!
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