A white, feathery deposit of ice crystals formed on the ground, grass, and other surfaces by the freezing of water vapor in cold, clear conditions.
From Old English 'hÄr' (grey-haired/venerable) + 'frost.' The ice looks like the white hair of the elderly — nature growing old overnight.
When the world wakes up looking like it grew white hair overnight! Old English people thought frost looked like grey hair, so they called it HOAR-frost — old-man frost! Every surface gets a tiny white wig! 🧓â„ï¸
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