Steam or water vapor dispersed in the air, or the visible mist produced when steam meets cooler air.
From 'aero-' (air) combined with 'steam.' This term appears in specialized technical and meteorological contexts to describe steam suspended or dispersed in the atmosphere.
When you see the misty cloud pouring out of a cooling tower at a power plant or rising from your cup of hot tea, you're watching aerosteam—water vapor condensing into tiny visible droplets as it cools. It looks scary coming from a power plant, but it's actually just water returning to the atmosphere.
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