寒冷 is an adjective meaning 'severe cold' or 'intense coldness', emphasizing both low temperature and its harsh, biting quality. The character 寒 (hán) conveys deep cold, often associated with winter, frost, or chilliness that penetrates the body; 冷 (lěng) means 'cold' in a general physical sense. Together, they intensify each other — not just cool or chilly, but bitterly, uncomfortably cold. This word is commonly used to describe weather conditions, outdoor environments, or sensations of extreme cold.

寒冷 appears frequently in formal writing, news reports, weather forecasts, and descriptive narratives. It’s stronger than just 冷 and implies discomfort or even danger — for example, prolonged exposure to 寒冷 weather may require protective clothing or heating. Unlike 冷 alone, which can be neutral (e.g., cold water), 寒冷 carries a distinctly negative, severe connotation and rarely describes objects or abstract concepts outside temperature contexts.