̷ ̷ˈ ̷ ̷| ̷ ̷ noun
: a unit that represents one degree of declination from a given point (as 65°) in the mean outdoor temperature of one day and is often used in measuring fuel requirements of buildings
̷ ̷ˈ ̷ ̷| ̷ ̷ noun
: a unit that represents one degree of declination from a given point (as 65°) in the mean outdoor temperature of one day and is often used in measuring fuel requirements of buildings
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012