The scientific study of ice, frost, and low-temperature phenomena, including their formation, properties, and effects.
From Greek 'kryos' (cold) and 'logos' (word, study). Formalized as a scientific discipline in the 19th century as researchers became interested in glaciers, permafrost, and freeze-thaw cycles.
Cryology seems new but ancient peoples understood it perfectly—they knew ice could split rocks (freeze-thaw weathering) and that understanding allowed them to quarry stone without explosives!
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