| 1. | the interval of light between two successive nights; the time between sunrise and sunset: Since there was no artificial illumination, all activities had to be carried on during the day. |
| 2. | the light of day; daylight: The owl sleeps by day and feeds by night. |
| 3. | Astronomy.
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| 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 initial capital letter ) 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. | light 1 (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. |

| 1. | Benjamin Henry, 1810–89, U.S. newspaper publisher. |
| 2. | Clarence (Shep⋅ard) [shep-erd] , 1874–1935, U.S. author. |
| 3. | Dorothy, 1897–1980, U.S. Roman Catholic social activist, journalist, and publisher. |
| 4. | Also, Daye. Stephen, 1594?–1668, U.S. colonist, born in England: considered the first printer in the Colonies. |
noun, adjective, -er, -est, verb, light⋅ed or lit, light⋅ing.| 1. | something that makes things visible or affords illumination: All colors depend on light. |
| 2. | Physics.
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| 3. | the sensation produced by stimulation of the organs of sight. |
| 4. | an illuminating agent or source, as the sun, a lamp, or a beacon. |
| 5. | the radiance or illumination from a particular source: the light of a candle. |
| 6. | the illumination from the sun; daylight: We awoke at the first light. |
| 7. | daybreak or dawn: when light appeared in the east. |
| 8. | daytime: Summer has more hours of light. |
| 9. | a particular light or illumination in which an object seen takes on a certain appearance: viewing the portrait in dim light. |
| 10. | a device for or means of igniting, as a spark, flame, or match: Could you give me a light? |
| 11. | a traffic light: Don't cross till the light changes. |
| 12. | the aspect in which a thing appears or is regarded: Try to look at the situation in a more cheerful light. |
| 13. | the state of being visible, exposed to view, or revealed to public notice or knowledge; limelight: Stardom has placed her in the light. |
| 14. | a person who is an outstanding leader, celebrity, or example; luminary: He became one of the leading lights of Restoration drama. |
| 15. | Art.
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| 16. | a gleam or sparkle, as in the eyes. |
| 17. | a measure or supply of light; illumination: The wall cuts off our light. |
| 18. | spiritual illumination or awareness; enlightenment. |
| 19. | Architecture.
|
| 20. | mental insight; understanding. |
| 21. | lights, the information, ideas, or mental capacities possessed: to act according to one's lights. |
| 22. | a lighthouse. |
| 23. | Archaic. the eyesight. |
| 24. | having light or illumination; bright; well-lighted: the lightest room in the entire house. |
| 25. | pale, whitish, or not deep or dark in color: a light blue. |
| 26. | (of coffee or tea) containing enough milk or cream to produce a light color. |
| 27. | to set burning, as a candle, lamp, fire, match, or cigarette; kindle; ignite. |
| 28. | to turn or switch on (an electric light): One flick of the master switch lights all the lamps in the room. |
| 29. | to give light to; furnish with light or illumination: The room is lighted by two large chandeliers. |
| 30. | to make (an area or object) bright with or as if with light (often fol. by up): Hundreds of candles lighted up the ballroom. |
| 31. | to cause (the face, surroundings, etc.) to brighten, esp. with joy, animation, or the like (often fol. by up): A smile lit up her face. Her presence lighted up the room. |
| 32. | to guide or conduct with a light: a candle to light you to bed. |
| 33. | to take fire or become kindled: The damp wood refused to light. |
| 34. | to ignite a cigar, cigarette, or pipe for purposes of smoking (usually fol. by up): He took out a pipe and lighted up before speaking. |
| 35. | to become illuminated when switched on: This table lamp won't light. |
| 36. | to become bright, as with light or color (often fol. by up): The sky lights up at sunset. |
| 37. | to brighten with animation or joy, as the face or eyes (often fol. by up). |
| 38. | bring to light, to discover or reveal: The excavations brought to light the remnants of an ancient civilization. |
| 39. | come to light, to be discovered or revealed: Some previously undiscovered letters have lately come to light. |
| 40. | hide one's light under a bushel, to conceal or suppress one's talents or successes. |
| 41. | in a good (or bad) light, under favorable (or unfavorable) circumstances: She worshiped him, but then she'd only seen him in a good light. |
| 42. | in (the) light of, taking into account; because of; considering: It was necessary to review the decision in the light of recent developments. |
| 43. | light at the end of the tunnel, a prospect of success, relief, or redemption: We haven't solved the problem yet, but we're beginning to see light at the end of the tunnel. |
| 44. | see the light,
|
| 45. | shed or throw light on, to clarify; clear up: His deathbed confession threw light on a mystery of long standing. |

| Day, Clarence Shepard, Jr. 1874-1935. American writer best known for his autobiographical Life with Father (1935) and Life with Mother (published 1937). |
| Day, Dorothy 1897-1980. American journalist and reformer who cofounded the Catholic Worker in 1933 to promote pacifism and social justice. |
The type of electromagnetic wave that is visible to the human eye. Visible light runs along a spectrum from the short wavelengths of violet to the longer wavelengths of red. (See photon.)
light
|
light (līt)
n.
Electromagnetic radiation that has a wavelength in the range from about 4,000 (violet) to about 7,700 (red) angstroms and may be perceived by the normal unaided human eye.
Electromagnetic radiation of any wavelength.
Day
The Jews reckoned the day from sunset to sunset (Lev. 23:32). It was originally divided into three parts (Ps. 55:17). "The heat of the day" (1 Sam. 11:11; Neh. 7:3) was at our nine o'clock, and "the cool of the day" just before sunset (Gen. 3:8). Before the Captivity the Jews divided the night into three watches, (1) from sunset to midnight (Lam. 2:19); (2) from midnight till the cock-crowing (Judg. 7:19); and (3) from the cock-crowing till sunrise (Ex. 14:24). In the New Testament the division of the Greeks and Romans into four watches was adopted (Mark 13:35). (See WATCHES.) The division of the day by hours is first mentioned in Dan. 3:6, 15; 4:19; 5:5. This mode of reckoning was borrowed from the Chaldeans. The reckoning of twelve hours was from sunrise to sunset, and accordingly the hours were of variable length (John 11:9). The word "day" sometimes signifies an indefinite time (Gen. 2:4; Isa. 22:5; Heb. 3:8, etc.). In Job 3:1 it denotes a birthday, and in Isa. 2:12, Acts 17:31, and 2 Tim. 1:18, the great day of final judgment.
day
In addition to the idioms beginning with day, also see all in a day's work; any day; apple a day; bad hair day; break of day; by the day; call it a day; carry the day; different as night and day; dog days; every dog has its day; field day; for days on end; forever and a day; from this day forward; good day; had its day; happy as the day is long; heavenly days; in all one's born days; in the cold light of day; in this day and age; late in the day; make a day of it; make one's day; name the day; night and day; not give someone the time of day; not one's day; one of these days; order of the day; pass the time (of day); plain as day; rainy day; red-letter day; Rome wasn't built in a day; salad days; save the day; seen better days; see the light of day; that'll be the day; the other day; time of day; tomorrow is another day; win through (the day).
| DAY James M. Cox Dayton [OH] International Airport |