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Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !
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Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.
1.lasting, open, or operating through the whole night"a nightlong vigil" "an all-night drugstore" "an overnight trip"
1.lasting, open, or operating through the whole night"a nightlong vigil" "an all-night drugstore" "an overnight trip"
1.Roman goddess of night; daughter of Erebus; counterpart of Greek Nyx
1.darkness"it vanished into the night"
2.the dark part of the diurnal cycle considered a time unit"three nights later he collapsed"
3.the time after sunset and before sunrise while it is dark outside
4.the time between sunset and midnight"he watched television every night"
5.the period spent sleeping"I had a restless night"
6.a period of ignorance or backwardness or gloom
7.a shortening of nightfall"they worked from morning to night"
NightNight (nīt), n. [OE. night, niht, AS. neaht, niht; akin to D. nacht, OS. & OHG. naht, G. nacht, Icel. nōtt, Sw. natt, Dan. nat, Goth. nahts, Lith. naktis, Russ. noche, W. nos, Ir. nochd, L. nox, noctis, Gr. ny`x, nykto`s, Skr. nakta, nakti. √265. Cf. Equinox, Nocturnal.]
1. That part of the natural day when the sun is beneath the horizon, or the time from sunset to sunrise; esp., the time between dusk and dawn, when there is no light of the sun, but only moonlight, starlight, or artificial light.
And God called the light Day, and the darkness he called Night. Gen. i. 5.
2. Hence: (a) Darkness; obscurity; concealment.
Nature and nature's laws lay hid in night. Pope.
(b) Intellectual and moral darkness; ignorance. (c) A state of affliction; adversity; as, a dreary night of sorrow. (d) The period after the close of life; death.
She closed her eyes in everlasting night. Dryden.
Do not go gentle into that good night
Rage, rage against the dying of the light. Dylan Thomas.
(e) A lifeless or unenlivened period, as when nature seems to sleep. “Sad winter's night”. Spenser.
☞ Night is sometimes used, esp. with participles, in the formation of self-explaining compounds; as, night-blooming, night-born, night-warbling, etc.
Night by night, Night after night, nightly; many nights.
Ay, night by night, in studying good for England. Shak.
What night rule now about this haunted grove? Shak.
-- Night sight. (Med.) See Nyctolopia. -- Night snap, a night thief. [Cant] Beau. & Fl. -- Night soil, human excrement; -- so called because in cities it is collected by night and carried away for manure. -- Night spell, a charm against accidents at night. -- Night swallow (Zoöl.), the nightjar. -- Night walk, a walk in the evening or night. -- Night walker. (a) One who walks in his sleep; a somnambulist; a noctambulist. (b) One who roves about in the night for evil purposes; specifically, a prostitute who walks the streets. -- Night walking. (a) Walking in one's sleep; sleep walking; somnambulism; noctambulism. (b) Walking the streets at night with evil designs. -- Night warbler (Zoöl.), the sedge warbler (Acrocephalus phragmitis); -- called also night singer. [Prov. Eng.] -- Night watch. (a) A period in the night, as distinguished by the change of watch. (b) A watch, or guard, to aford protection in the night. -- Night watcher, one who watches in the night; especially, one who watches with evil designs. -- Night witch. Same as Night hag, above.
Night Blindness • Night Care • Night Monkey • Night Monkey, Northern • Night Terrors • Night Terrors, Adult • Night Terrors, Childhood • Night Terrors, Primary • Night Terrors, Secondary • Night blindness • Night sweats • St John's Night • all night • all night long • all-night • at night • by night • every night • fall night • first night • good night • lady-of-the-night • last night • make a night of it • night adder • night after night • night bell • night bird • night blindness • night club • night court • night game • night glasses • night heron • night jasmine • night jessamine • night latch • night letter • night life • night light • night lizard • night owl • night porter • night rate • night raven • night rider • night robe • night school • night shift • night snake • night soil • night table • night terror • night train • night viewer • night vision • night watch • night watchman • night work • night-'watchman • night-blind • night-blooming cereus • night-club • night-light • night-line • night-reveller • night-robe • night-school • night-sight • night-stop • night-time • night-time walk • night-watchman • one-night stand • walk at night
Night or nighttime is the period of time between the sunset and the sunrise when the Sun is below the horizon. This occurs after dusk. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). The start and end points of time of a night vary based on factors such as season, latitude, longitude and timezone.
At any given time, one side of the planet Earth is bathed in light from the Sun (the daytime) and the other side of the Earth is in the shadow caused by the Earth blocking the light of the sun. This shadow is what we call the darkness of night. Natural illumination is still provided by a combination of moonlight, planetary light, starlight, diffuse zodiacal light, gegenschein, and airglow. In some circumstances, bioluminescence, aurorae and lightning can provide some illumination. The glow provided by artificial illumination is sometimes referred to as light pollution because it can interfere with observational astronomy and ecosystems.
Nights are shorter than days on average due to two factors. Firstly, the sun is not a point, but has an apparent size of about 32 arc minutes. Secondly, the atmosphere refracts sunlight so that some of it reaches the ground when the sun is below the horizon by about 34 arc minutes. The combination of these two factors means that light reaches the ground when the center of the sun is below the horizon by about 50 arc minutes. Without these effects, day and night would be the same length at the autumnal (autumn/fall) and vernal (spring) equinoxes, the moments when the sun passes over the equator. In reality, around the equinoxes the day is almost 14 minutes longer than the night at the equator, and even more towards the poles. The summer and winter solstices mark the shortest and the longest night, respectively. The closer a location is to either the North Pole or the South Pole, the larger the range of variation in the night's length. Although equinoxes occur with a day and night close to equal length, before and after an equinox the ratio of night to day changes more rapidly in high latitude locations than in low latitude locations. In the Northern Hemisphere, Denmark has shorter nights in June than India has. In the Southern Hemisphere, Antarctica has longer nights in June than Chile has. The Northern and Southern Hemispheres of the world experience the same patterns of night length at the same latitudes, but the cycles are 6 months apart so that one hemisphere experiences long nights (winter) while the other is experiencing short nights (summer).
Between the pole and the polar circle, the variation in daylight hours is so extreme that for a portion of the summer, there is no longer an intervening night between consecutive days and in the winter there is a period that there is no intervening day between consecutive nights.
The phenomenon of day and night is due to the rotation of a celestial body about its axis, creating the illusion of the sun rising and setting. Different bodies spin at very different rates, however. Some may spin much faster than Earth, while others spin extremely slowly, leading to very long days and nights. The planet Venus rotates once every 224.7 days – by far the slowest rotation period of any of the major planets. In contrast, the gas giant Jupiter's sidereal day is only 9 hours and 56 minutes. A planet may experience large temperature variations between day and night, such as Mercury, the planet closest to the sun. This is one consideration in terms of planetary habitability or the possibility of extraterrestrial life.
The disappearance of sunlight, the primary energy source for life on Earth, has dramatic impacts on the morphology, physiology and behavior of almost every organism. Some animals sleep during the night, while other nocturnal animals including moths and crickets are active during this time. The effects of day and night are not seen in the animal kingdom alone; plants have also evolved adaptations to cope best with the lack of sunlight during this time. For example, crassulacean acid metabolism is a unique type of carbon fixation which allows photosynthetic plants to store carbon dioxide in their tissues as organic acids during the night, which can then be used during the day to synthesize carbohydrates. This allows them to keep their stomata closed during the daytime, preventing transpiration of precious water.
As artificial lighting has improved, especially after the Industrial Revolution, night time activity has increased and become a significant part of the economy in most places. Many establishments, such as nightclubs, bars, convenience stores, fast-food restaurants, gas stations, distribution facilities, and police stations now operate 24 hours a day or stay open as late as 1 or 2 a.m. Even without artificial light, moon light sometimes makes it possible to travel or work outdoors at night.
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Night is often associated with danger and evil, because of the psychological connection of night's all-encompassing darkness to the fear of the unknown and darkness's obstruction of a major sensory system (the sense of sight). Humans are and have been daylight creatures for at least several million of years, and nighttime is naturally associated with the vulnerability and danger for human physical survival. Criminals, animals, and other potential dangers can be concealed by darkness. Midnight has a particular importance in human imagination and culture.
The belief in magic often includes the idea that magic and magicians are more powerful at night. Seances of spiritualism are usually conducted closer to midnight. Similarly, mythical and folkloric creatures as vampires and werewolves are described as being more active at night. Ghosts are believed to wander around almost exclusively during night-time. In almost all cultures, there exist stories and legends warning of the dangers of night-time. In fact, the Saxons called the darkness of night the 'death mist'.
In literature, night and the lack of light are often color-associated with blackness which is historically symbolic in many cultures for villainy, non-existence, or a lack of knowledge (with the knowledge usually symbolized by light or illumination).
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|Look up night in Wiktionary, the free dictionary.|
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