A measure of heating or cooling, computed as the integral of a function of time that generally varies with temperature.

plural of degree day

plural of man-day

(Roman Catholic Church) The Tuesday before Easter.

(Canada) A holiday commemorating the birthdays of Queen Victoria and the reigning monarch of Canada, falling on the last Monday before May 25.

(military) Abbreviation of mobilization day.

Work done where the worker is hired and paid one day at a time, with no promise that more work will be available in the future.

A laborer who is hired and paid one day at a time, with no promise that more work will be available in the future.

One day, some day (especially in warning of a negative consequence).

The day of the Sabbath; Saturday, the seventh day of the week.