noun
: the algebraic sum for a week, month, or other considerable period of the daily or other unit interval departures of the average temperature of the air from any arbitrary value, commonly 42° F
noun
: the algebraic sum for a week, month, or other considerable period of the daily or other unit interval departures of the average temperature of the air from any arbitrary value, commonly 42° F
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012