noun
: an advancing edge of a cold air mass that is displacing warm air in its path often recognized by a wind shift and drop in air temperature as it passes — see front illustration
noun
: an advancing edge of a cold air mass that is displacing warm air in its path often recognized by a wind shift and drop in air temperature as it passes — see front illustration
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012