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The character 冽 is structured with the ice radical 冫 and the component 列, which functions phonetically but also implies a sense of ordered intensity. Etymologically, it denotes coldness associated with ice or frigid water. In classical Chinese, 冽 was used to describe a sharp, penetrating cold, often applied to air or liquids. Its meaning has since refined to specifically convey piercing cold, and in modern usage, it appears predominantly in literary compounds rather than in isolation.