Pronunciation: (dā),[key] —n. 1. the interval of light between two successive nights; the time between sunrise and sunset: Since there was no artificial illumination, all activities hadto be carried on during the day. 2. the light of day; daylight: The owl sleeps by day and feeds by night. 3. Astron. a. Also calledmean solar day. a division of time equal to 24 hours and representing the average length of the period during which the earth makes one rotation on its axis.
b. Also calledsolar day. a division of time equal to the time elapsed between two consecutive returns of the same terrestrial meridian to the sun.
c. Also calledcivil day. a division of time equal to 24 hours but reckoned from one midnight to the next. Cf. lunar day, sidereal day. 4. an analogous division of time for a planet other than the earth: the Martian day. 5. the portion of a day allotted to work: an eight-hour day. 6. a day on which something occurs: the day we met. 7. (often cap.) a day assigned to a particular purpose or observance: New Year's Day. 8. a time considered as propitious or opportune: His day will come. 9. a day of contest or the contest itself: to win the day. 10. Often, days. a particular time or period: the present day; in days of old. 11. Usually, days. period of life or activity: His days are numbered. 12. period of existence, power, or influence: in the day of the dinosaurs. 13. light1 (def. 19a).
14. call it a day, to stop one's activity for the day or for the present; quit temporarily: After rewriting the paper, she decided to call it a day. 15. day in, day out, every day without fail; regularly: They endured the noise and dirt of the city day in, day out.Also,day in and day out.
Pronunciation: (dā),[key] —n. 1. Clarence (Shep•ard) Pronunciation: (shep'urd),[key] 1874–1935, U.S. author.
2. Dorothy, 1897–1980, U.S. Roman Catholic social activist, journalist, and publisher.