- (n.) (Preceded by the) Some day in particular, as some day of contest, some anniversary, etc.
- (n.) The time of light or interval between one night and the next; the time between sunrise and sunset or from dawn to darkness; hence, the light; sunshine.
- (n.) The period of the earth's revolution on its axis. -- ordinarily divided into twenty-four hours. It is measured by the interval between two successive transits of a celestial body over the same meridian, and takes a specific name from that of the body. Thus, if this is the sun, the day (the interval between two successive transits of the sun's center over the same meridian) is called a solar day; if it is a star, a sidereal day; if it is the moon, a lunar day. See Civil day, Sidereal day, below.
- (n.) A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time.
- (n.) Those hours or the daily recurring period, allotted by usage or law for work.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). day. Retrieved September 20, 2026, from http://smartdefine.org/day/definitions/1994615 |
| Chicago | Webster's. 2011. "day" http://smartdefine.org/day/definitions/1994615 (accessed September 20, 2026). |
| Harvard | Webster's 2011, day, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/day/definitions/1994615>. |
| MLA | Webster's. "day" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/day/definitions/1994615> |