When liquid turns into gas and disappears into the air, or when something gradually disappears or fades away.
From Latin 'evaporare': 'e-' (out) plus 'vapor' (steam). Originally described the physical process of water becoming steam, later extended to describe any gradual disappearance.
Puddles evaporate, but so do promises and friendships—science gave us this word for a physical process, and poets stole it to describe how intangible things vanish just as invisibly.
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