On average, this is 24 hours (86,400 seconds). As a day passes at a given location it experiences morning, afternoon, evening, and night. This daily cycle drives circadian rhythms in many organisms, …

The meaning of DAY is the time of light between one night and the next. How to use day in a sentence.

DAY definition: 1. a period of 24 hours, especially from twelve o'clock one night to twelve o'clock the next night…. Learn more.

1. Of or relating to the day. 2. Working during the day: the day nurse. 3. Occurring before nightfall: a day hike.

Definition of day noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Day is the time when it is light, or the time when you are up and doing things. The weather did not help; hot by day, cold at night. 27 million working days are lost each year due to work accidents and …

Sep 2, 2025 · "Day" is a fundamental term representing a 24-hour cycle, daylight hours, and specific events or eras. Its widespread use reflects its significance in organizing time and describing …

Day definition: The period of light between dawn and nightfall; the interval from sunrise to sunset.

3 days ago · The time taken for the Earth to make a full rotation about its axis with respect to the fixed stars; a sidereal day or stellar day. (informal or meteorology) A 24-hour period beginning at 6am or …

DAY definition: the interval of light between two successive nights; the time between sunrise and sunset. See examples of day used in a sentence.