Notonectidae Notonectidae or backswimmers is a family of insects of the Hemiptera order. Back swimmers, or Greater Water Boatmen are hemipteran bugs. They are named backswimmers because they are aquatic predators that swim upside down. They are up to 15 mm in size. They are similar to corixidae, but can be separated by differences in their dorsal-ventral coloration, front legs, and behavior.
	Notorious Notorious is a 1946 thriller directed by Alfred Hitchcock. Claude Rains received a nomination for Academy Award for Best Supporting Actor.
	Notostraca The Order Notostraca are small crustaceans in the Class Branchiopoda. Triops have two internal compound eye and one naupliar eye in-between, a flattened carapace covering the head and arthropod leg-bearing body segment. The order contains a single family, with only two extant genus.
	Nova A nova is a cataclysmic nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star.
	Nova Scotia Nova Scotia is a Canadian Provinces of Canada located on Canada's southeastern coast. It is the most populous province in the Maritimes, and its capital, Halifax Regional Municipality, Nova Scotia, is the economic and cultural centre of the region. Nova Scotia is the second smallest province in Canada, with an area of 55,284 km.
	Novaya Zemlya Novaya Zemlya is an archipelago in the Arctic Ocean in the north of Russia and the extreme northeast of Europe. The archipelago is administered by Arkhangelsk Oblast as Novaya Zemlya District. Population: 2,716. Novaya Zemlya consists of two major islands, separated by the narrow Matochkin Strait, and a number of smaller ones.
	Novel A novel is an extended, generally fictional narrative in prose. Until the eighteenth century, the word referred specifically to short fictions of love and intrigue as opposed to romance s, which were epic poetry-length works about love and adventure.
	November November is the eleventh and penultimate month of the year in the Gregorian Calendar and one of four Gregorian months with the length of 30 days. November begins in western tropical astrology with the sun in the sign of Scorpio and ends in the sign of Sagittarius .
	Novial Novial [nov-, new + IAL, International Auxiliary Language] is a constructed language devised by Professor Otto Jespersen, a Denmark linguist who had previously been involved in the Ido movement. He devised Novial to be an international auxiliary language , which would facilitate international communication and friendship, without displacing anyone's native language.
	Novillero Novillero is a Canada indie rock band formed in 1999 in music in Winnipeg, Manitoba. Novillero formed in 1999 out of the ashes of Winnipeg lounge pop darlings Transonic, picking up Rod Slaughter, Dave Berthiaume, and Rusty Matyas along the way. This lineup released The Brindleford Follies on Endearing Records, toured moderately in support of it's release, and then ground to a halt early in 2002.
	Novobiocin Novobiocin is a coumarin antibiotic used to treat Staphylococcus epidermidis. It acts by inhibiting DNA gyrase, an enzyme that mediates the supercoiling of DNA. DNA gyrase has no mammalian equivalent. Novobiocin is an aromaticity ether compound.
	Novosibirsk Novosibirsk is Russia's third largest city, after Moscow and Saint Petersburg, and the administrative center of Novosibirsk Oblast. It is also the largest city in Siberia and the administrative center of Siberian Federal District, in the southwest of which it is located.
	Now and Again Now and Again was an American television series which aired in the US on the 24th September 1999 and ran till 2000 on CBS. The story revolves around the United States government developing the perfect human body for use in espionage, but not being able to yet perfect the brain. In an attempt to get the project off and running, they take the brain of overweight family man Michael Wiseman, who is killed in a subway accident.
	Nozzle A nozzle is a mechanical device designed to control the characteristics of a fluid flow as it exits from an enclosed chamber into some medium. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid(liquid or gas).
	NREM The sleep stages 1 through 4 are collectively referred to as NREM sleep. rapid eye movement, or stage 5, is not included. There are distinct Electroencephalography characteristics seen in each stage. Unlike REM sleep, there is usually little or no eye movement during this stage.
	NT NT may mean: Places and geographical terms: * Netherlands Antilles: List of FIPS country codes * New Territories, an area of land in Hong Kong * Iraq-Saudi Arabia Neutral Zone: ISO 3166 digram * Northern Territory * Northwest Territories
	Nubia Today Nubia is the region in the south of Egypt, along the Nile and in northern Sudan, but in ancient times it was an independent kingdom. Most of Nubia is situated in Sudan with about a quarter of its territory in Egypt. Image:Egypt-Nubian_wedding.jpg
	Nubian Desert The Nubian Desert, is in the eastern region of the Sahara Desert, it spans 407, 000 km2 or 157,000 square miles of northeastern Sudan between the Nile and the Red Sea, at .. The arid region, a largely sandstone plateau, has lots of wadis flowering toward the Nile. There is virtually no rainfall in the Nubian, and there are no oasis.
	Nubians The Nubians are an ethnic group in Egypt and Sudan. There are more Nubians in Sudan than in Egypt and their socio-economic status is better in Sudan than in Egypt. Their language, which is divided into two main branches, is called Nobiin, and they are descended from the ancient Nubians.
	Nuclear fission For the generation of electrical power by fission, see Nuclear power plant Nuclear fission - also known as atomic fission - is a process in nuclear physics in which the atomic nucleus of an atom splits into two or more smaller nuclei as fission products, and usually some by-product particles.
	Nuclear fuel Nuclear fuel is any material that can be consumed to derive nuclear energy, by analogy to chemical fuel that is burned to derive energy. By far the most common type of nuclear fuel is heavy fissile elements that can be made to undergo nuclear fission chain reactions in a nuclear reactor; nuclear fuel can refer to the material or to physical objects composed of the fuel material, perhaps mixed with structural, neutron moderator, or neutron reflecting materials
	Nuclear fusion In physics, nuclear fusion is the process by which multiple atomic nucleus join together to form a heavier nucleus. It is accompanied by the release or absorption of energy depending on the masses of the nuclei involved. Iron and nickel nuclei have the largest binding energy per nucleon of all nuclei and therefore are the most stable.
	Nuclear magnetic resonance Nuclear magnetic resonance is a physical phenomenon based upon the magnetism property of an atom's atomic nucleus. All nuclei that contain odd numbers of nucleons and some that contain even numbers of nucleons have an intrinsic magnetic moment. The most often-used nuclei are hydrogen-1 and carbon-13, although certain isotopes of many other elements nuclei can also be observed.
	Nuclear medicine Nuclear medicine is a branch of medicine and medical imaging that uses unsealed radioactive substances in diagnosis and therapy. These substances consist of radionuclides, or pharmaceuticals that have been labeled with radionuclides. In diagnosis, radioactive substances are administered to patients and the ionizing radiation emitted is measured.
	Nuclear power Nuclear power is the controlled use of nuclear reactions to release energy for work including Nuclear propulsion, heat, and the generation of electricity. Human use of nuclear power to do significant useful work is currently limited to nuclear fission and radioactive decay.
	Nuclear reaction style="float:right; margin-left:1em; width:300px; ">it:Reazione nucleare
	Nuclear reactor A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate . Nuclear reactors are used for many purposes. The most significant current use is for the generation of electrical power . Research reactors are used for radioisotope production and for beamline experiments with free neutrons.
	Nuclear Regulatory Commission Nuclear Regulatory Commission is a United States government agency that was established by the Energy Reorganization Act of 1974 in 1974, and was first opened January 19, 1975. The NRC took over the role of oversight of nuclear energy matters and nuclear safety from the United States Atomic Energy Commission, or Atomic Energy Commission.
	Nuclear weapon A nuclear weapon derives its destructive force from nuclear reactions of nuclear fission or nuclear fusion. As a result, even a nuclear weapon with a relatively small Nuclear weapon yield is significantly more powerful than the largest conventional explosives, and a single weapon is capable of destroying an entire city.
	Nucleic acid A nucleic acid is a complex, high-molecular-weight biochemistry macromolecule composed of nucleotide chains that convey genetic information. The most common nucleic acids are DNA and RNA . Nucleic acids are found in all living cell and viruses.
	Nucleolus In cell biology, the nucleolus is a "suborganelle" of the cell nucleus, which is an organelle. A main function of the nucleolus is the production and assembly of ribosome components. The nucleolus is roughly spherical, and is surrounded by a layer of condensed chromatin. No membrane separates the nucleolus from the nucleoplasm.
	Nucleoplasm Similar to the cytoplasm of a cell, the cell nucleus contains nucleoplasm or nuclear sap which is a jello like substance. It is envelopped by the nuclear membrane or nuclear envelope. The nucleoplasm is a highly dip dip part of the changs hamigng low of the viscous liquid that surrounds the chromosomes and nucleoli.
	Nucleoside align="center" valign="bottom" ! Nitrogenous base ! Nucleoside ! Deoxynucleoside |- align="center" valign="" | ja:?????? pl:Nukleozyd fi:Nukleosidi
	Nucleosynthesis Nucleosynthesis is the process of creating new atomic nuclei from preexisting nucleons . The primordial preexisting nucleons were formed from the quark-gluon plasma of the Big Bang as it cooled below ten million degrees. This first process may be called nucleogenesis, the genesis of nucleons in the universe.
	Nucleotide A nucleotide is a Chemical_compound that consists of a Basic_aromatic_ring, a sugar, and one or more phosphate Functional groups. In the most common nucleotides the base is a derivative of purine or pyrimidine, and the sugar is the pentose deoxyribose or ribose.
	Nuda Nuda is a class of Ctenophora known as comb jelly, all of which have no tentacles. Category:Ctenophora de:Nuda pt:Nuda
	Nudibranch Nudibranchs are sea slugs belonging to the suborder Nudibranchia, the largest suborder of the order Opisthobranchia. There are more than 3,000 described species. Description da:Ngensnegle de:Nacktkiemer fr:Nudibranchia he:??????? ?? ja:????
	Nudity Nudity or nakedness is the state of wearing no clothing. It is sometimes used to refer to wearing significantly less clothing than expected by the conventions of a particular culture and situation, and in particular exposing the bare skin of intimate parts and has analogous uses.
	Nullarbor Plain The Nullarbor Plain is the vast area of flat, almost treeless, arid or semi-arid country immediately north of the Great Australian Bight. The word Nullarbor is derived from the Latin null for 'no' and arbor for 'tree'. It is the world's largest single piece of limestone, and occupies an area of about 200,000 km.
	Numbat The Numbat is a small marsupial native to western and southern Australia with a number of unique features. The ecologically vulnerable Numbat is the sole member of the genus Myrmecobius and the Family Myrmecobiidae, one of the three families that make up the order Dasyuromorphia, the generalised marsupial carnivores.
	Number Ones Number Ones is a greatest hits album released by singer-songwriter Michael Jackson in late 2003 in music. It sold 6 million copies worldwide, peaking at #1 in most countries. A partnering DVD was released which charted well in most countries. As well as including most of Jackson's international #1 hits, the compilation included two bonus tracks.
	Numidia Numidia was an ancient Berber kingdom in North Africa that later became a Roman province, and is no longer in existence today. It was located on the eastern coast of modern day Algeria, bordered by the Roman province of Mauretania to the west, the Roman Africa to the east, the Mediterranean Sea to the north, and the Sahara Desert to the south.
	Numismatics Numismatics is the scientific study of money and its history in all its varied forms. While numismatists are often characterized as studying coins, the discipline also includes a much larger study of payment media used to resolve debts and the exchange of goods. Lacking a structured monetary system, people in the past as well as some today, lived in a barter society and used locally found items of inheirent or implied value.
	Nummulite A nummulite is a large lenticular fossil, recognized by its numerous coils, subdivided by incomplete septae into squarish chambers. They are the shells of the extinct marine protozoan Nummulites, a type of foraminiferan. Nummulites reach 6 cm or 2.4 inches in diameter, and are common in Tertiary rocks, particularly around the Mediterranean.
	Nun In general, a nun is a woman monasticism who chooses to voluntarily leave mainstream society and live her life in prayer and contemplation in a monastery or convent. The term "nun" is applicable to Roman Catholics, Eastern Christianity, Anglicans, Jains, Lutherans, and Buddhists, for example.
	Nunavut Nunavut is the largest and newest of the Provinces and territories of Canada of Canada; it was separated officially from the vast Northwest Territories on April 1, 1999 via the and the , though the actual boundaries were established in 1993. The creation of Nunavut resulted in the first major change to Canada's map since the incorporation of the new province of Newfoundland and Labrador in 1949.
	Nunc dimittis The Nunc dimittis is a canticle from a text in the second chapter of Gospel of Luke named after its first words in Latin language. Simeon the Righteous was a devout Jew who had been promised by the Holy Spirit that he would not die until he had seen the Saviour.
	Nuphar Nuphar is genus of aquatic plants in the family Nymphaeaceae, with a temperate Northern Hemisphere distribution. The common name, shared with some other genera in the same family, is water lily or waterlily. There are between 1-25 species in the genus; some botanists treat the genus as just a single variable species, but 10-15 species are typically accepted by most authorities.
	Nuphar lutea Nuphar lutea, the spatterdock, yellow water-lily, cow lily, or yellow pond-lily, is an aquatic plant of the family Nymphaeaceae, native to Eurasia. It grows in eutrophic freshwater beds, with its roots fixed into the ground and its leaves floating on the water's surface.
	Nuremberg Nuremberg is a city in the Germany state of Bavaria, in the Regierungsbezirk of Middle Franconia. It is situated on the Pegnitz River river and the Rhine-Main-Danube Canal. It is located about 105 miles north of Munich, at 49.27 N 11.5 E.
	Nurse A nurse is a health profession who is engaged in the practice of nursing. Nurses are responsiblealong with other health care professionalsfor the treatment, safety, and recovery of Acute_ or Chronic_ ill or injured people, health maintenance of the healthy, and treatment of life-threatening emergencies in a wide range of health care settings.
	Nurse log A nurse log is a fallen tree which, as it decays, provides Ecological facilitation to seedlings. Broader definitions include providing shade or support to other plants.
	Nurse shark The nurse shark, Ginglymostoma cirratum, is a shark in the nurse sharks family, the only member of its genus Ginglymostoma. It may reach a length of 4.3 m.
	Nurse sharks Nurse sharks are cosmopolitan carpet sharks belonging to the family Ginglymostomatidae. Common in shallow, tropical and subtropical waters of the western Atlantic Ocean and eastern Pacific Ocean, the family comprises three genera each with one species.
	Nursery rhyme A nursery rhyme is a traditional song or poem taught to young children, originally in the nursery . Learning such verse assists in the development of vocabulary, and several examples deal with rudimentary counting skills. In addition, specific actions, motions, or dances are often associated with particular songs.
	Nursery school A nursery school or preschool is a school for the education of very young children. These schools range from schools which seek to teach young children to schools which only provide childcare with little educational benefits. Schools which focus on education generally teach early social skills including interpersonal interaction, being a part of a peer group, and classroom skills such as following the instructions of a teacher.
	Nursing Nursing is a profession focused on assisting individuals, family and community in attaining, re-attaining and maintaining optimal health and functioning. Modern definitions of nursing define it as a science and an art that focuses on promoting quality of life as defined by persons and families, throughout their life experiences from childbirth to care at the death.
	Nut butter Nut butter refers to the mashing of nuts to create a spread. The most common is peanut butter. Other nut butters from common Nuts include: * Walnut butter * Almond butter * Hazelnut butter * Macadamia nut butter * Pecan butter * Cashew butter Similar spreads can also be made from other seeds that are not considered to be nuts.
	Nutation Nutation is a slight irregular motion in the Axis of rotation of rotation of a largely axially symmetric object, such as a gyroscope or a planet. The nutation of a planet is due to the fact that the tidal forces which cause the precession of the equinoxes vary over time so that the speed of precession is not constant.
	Nutcracker A nutcracker consists of a mechanical device for cracking nut s. It works on the principle of moment s as described in Archimedes' analysis of the lever.
	Nuthatch The nuthatches are a family, Sittidae, of generally very similar small passerine birds found throughout the Northern hemisphere. The nuthatch family, Sittidae, traditionally contained 23 species. The subfamily Sittinae held the 22 species of true nuthatches, and the subfamily Tichodromadinae held a single species, the unique Wallcreeper, Tichodroma muraria, which is now separated in its own family, Tichodromadidae.
	Nutmeg The nutmegs Myristica are a genus of evergreen trees indigenous to tropical southeast Asia and Australasia. They are important for two spices derived from the fruit, nutmeg and mace. Nutmeg is the actual seed of the tree, roughly egg-shaped and about 20-30 mm long and 15-18 mm wide, while mace is the dried "lacy" reddish covering or arillus of the seed.
	Nutrient A nutrient is any element or compound necessary for or contributing to an organism's metabolism, growth, or other functioning. Six nutrient groups exist, classifiable as those that provide energy, and as those that otherwise support metabolic processes in the body: Some of them are Essential nutrient because they cannot be synthesized in the body and must be obtained from a food source.
	Nutrition Nutrition is a science which studies the relationship between diet and states of health and disease. Dietitian are Health professionals who are specialized in this area of expertise. They are also the only highly trained health professionals able to provide safe, evidence-based and accurate dietary advice and interventions.
	Nyala The Nyala is a South African antelope. The male stands up to 3.5 feet, the female is up to 3 feet tall. The male has loosely spiraled horns and a long fringe on throat and underpants, the female has no horns and no noticeable fringe. The male is dark brown, white on the face and neck, and vertical white stripes on the body.
	Nyctaginaceae Nyctaginaceae is a family of around 33 genera and 290 species of flowering plants, widely distributed in tropical and subtropical regions, with a few representatives in temperate regions. The family has a unique fruit type, called an "anthocarp" and many genera have extremely large pollen grains.
	Nyctereutes The Nyctereutes genus most likely diverged from other canids seven to ten million years ago. * Nyctereutes abdeslami1 * Nyctereutes donnezani1 * Nyctereutes megamastoides1 * Nyctereutes procyonoides, or the Raccoon Dog * Nyctereutes sinensis1
	Nylon Plastic#Nylon represents a family of synthetic polymers, a thermoplastic material, first produced on 28 February, 1935 by Gerard J. Berchet of Wallace Carothers' research group at DuPont. The first product was a nylon-bristled toothbrush , followed more famously by women's 'nylons' stockings .
	Nymph In Greek mythology, a nymph is any member of a large class of female nature entities, either bound to a particular location or landform or joining the retinue of a god or goddess. Nymphs were the frequent target of lusty satyrs. "The idea that rivers are gods and springs divine nymphs," Walter Burkert remarks "is deeply rooted not only in poetry but in belief and ritual; the worship of these deities is limited only by the fact that they are inseparably identified with a specific locality." Nymphs are personifications of the
	Nymphaea Nymphaea is a genus of aquatic plants in the family Nymphaeaceae. The common name, shared with some other genera in the same family, is water-lily or waterlily. Nymphaea Leaf have a radial notch from the circumference to the petiole in the center. There are about 50 species in the genus, which has a cosmopolitan distribution.