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degree day

Syllabification: de·gree day

Definition of degree day in English:

noun

A unit used to determine the heating requirements of buildings, representing a fall of one degree below a specified average outdoor temperature (usually 18°C or 65°F) for one day.
Example sentences
  • Weather contracts on U.S. cities for the winter months are tied to an index of heating degree day values.

Definition of degree day in:

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