- A unit measuring the extent to which the outdoor mean (average of maximum and minimum) daily dry-bulb temperature falls below (in the case of heating) or rises above (in the case of cooling) an assumed base. The base is normally taken as 65 degrees for heating and cooling unless otherwise designated.
Energy terms . 2014.
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degree-day — [di grē′dā΄] n. a unit which represents one degree of variation from a standard average daily temperature, used as in determining fuel requirements … English World dictionary
Degree day — A degree day is a measure of heating or cooling. Totalized degree days from an appropriate starting date are used to plan the planting of crops and management of pests and pest control timing. Weekly or monthly degree day figures may also be used … Wikipedia
degree-day — ̷ ̷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 * * * /di gree day /, n. Engin. one degree … Useful english dictionary
Degree Day — A unit for measuring the extent that the outdoor daily average temperature (the mean of the maximum and minimum daily dry bulb temperatures) falls below (in the case of heating, see Heating Degree Day), or falls above (in the case of cooling,… … Energy terms
degree-day — /di gree day /, n. Engin. one degree of departure, on a single day, of the daily mean temperature from a given standard temperature. Abbr.: dd Also, degree day. Cf. cooling degree day, growing degree day, heating degree day. [1925 1930] * * * … Universalium
degree day — Term created to assess and acknowledge expected demand for energy. A degree day value is the difference between a day s average temperature and a previously set temperature ( in the U.S., 65 degrees Fahrenheit). Degree days above 65 degrees are… … Financial and business terms
degree-day — de•gree day [[t]dɪˈgriˌdeɪ[/t]] n. mer one degree of departure, on a single day, of the daily mean temperature from a given standard temperature … From formal English to slang
degree day — (deg da) a unit used in meteorology and engineering to measure the demand for heating or cooling. In the United States, it s agreed that 65 °F (18.3 °C) is the critical outside temperature; below this tempeature heating is needed and above it… … Dictionary of units of measurement
degree day — see day degree … Dictionary of ichthyology
degree-day — Unit that represents one degree of difference from inside temperature and the average outdoor temperature for one day; often used in estimating fuel requirements for a building … Dictionary of automotive terms
degree day — noun 1. the day on which university degrees are conferred • Syn: ↑commencement day • Hypernyms: ↑day 2. a unit used in estimating fuel requirements for heating a building • Hypernyms: ↑temperature unit … Useful english dictionary