Fluorite Fluorite is a mineral composed of calcium fluoride, CaF2. It is an Cubic mineral with a cubic habit, though octahedral and more complex isometric forms are not uncommon. Crystal twinning is common and adds complexity to the observed crystal habits.
	Fluorocarbon ]] Fluorocarbons are chemical compounds that contain carbon-fluorine Chemical bonds. The relatively low reactivity and high polarity of the carbon-fluorine bond imparts unique characteristics to fluorocarbons. Fluorocarbons tend to be only slowly broken down in the environment and therefore many are considered persistent organic pollutants.
	Fluoroform Fluoroform CHF3; CAS number, also known as trifluoromethane, is one of the haloalkanes with zero ozone depletion, as it does not contain any chlorine. As a refrigerant, it is known as R-23 or HFC-23. In the semiconductor industry, it is also used in plasma etching of silicon oxide or silicon nitride.
	Fluoroscopy Fluoroscopy is an imaging technique commonly used by physicians to obtain real-time images of the internal structures of a patient through the use of a fluoroscope. In its simplest form, a fluoroscope consists of an x-ray source and fluorescent screen between which a patient is placed.
	Fluorouracil Fluorouracil is a medication that is used in the treatment of cancer. It belongs to the family of drugs called antimetabolites. It is a pyrimidine analog.
	Fluoxetine Fluoxetine hydrochloride is an antidepressant Medication used medically in the treatment of Clinical depression, obsessive-compulsive disorder, bulimia nervosa, premenstrual dysphoric disorder and panic disorder. Fluoxetine is also used to treat many other conditions, such as Attention-deficit hyperactivity disorder.
	Fluphenazine Fluphenazine is a typical antipsychotic medication used for the treatment of psychosis such as schizophrenia and acute manic phases of bipolar disorder clinical depression. It belongs to the piperazine class of phenothiazines and is extremely potent; more potent than haloperidol and around fifty to seventy times the potency of chlorpromazine.
	Flurazepam Flurazepam is a drug which is a benzodiazepine derivative. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. It has the longest half-life of all of the benzodiazepines, and may stay in the bloodstream for up to four days. It is used for short-term treatment of patients with insomnia.
	Flurbiprofen Flurbiprofen is a member of the phenylalkanoic acid derivative family of non-steroidal anti-inflammatory drugs used to treat the inflammation and pain of arthritis. It is also known by the trade name ANSAID and marketed by Pfizer. R-flurbiprofen is the single enantiomer of racemate flurbiprofen; this compound is currently in clinical trials for the treatment of metastatic prostate cancer, and Alzheimer's disease.
	Flurry Flurry is an OpenGL-based screensaver originally written by Brian Wade and converted to the Mac by Calum Robinson, released under the BSD License for Mac OS X. It draws a complex 'flurry' of colourful particles on a black background. Mac OS X v10.2 was the first Mac OS to include a limited-function version of Flurry.
	Flush toilet A flush toilet or water closet is a toilet that disposes of the waste products by using water to send them through a drainpipe to another location. Modern toilets incorporate an 'S' bend which remains filled with water between flushing, thus providing a hygienic barrier by preventing foul gases from passing up the drainpipe.
	Flute The flute is a musical instrument of the woodwind family. Unlike other woodwind instruments, a flute produces its sound from the flow of air against an edge, instead of using a Reed . A musician who plays the flute is generally referred to as either a flautist or a flutist.
	Fluvastatin Fluvastatin is a member of the medication class of statins, used to treat hypercholesterolemia and to prevent cardiovascular disease. Category:Statins es:Fluvastatina nl:Fluvastatine th:???????????
	Flux In the various subfields of physics, there exist two common usages of the term flux, both with rigorous mathematical frameworks. *In the study of transport phenomena , flux is defined as the amount of a given quantity that flows through a unit area per unit time. Flux in this definition is a vector .
	Fly This article is about the insect. For other meanings, see Fly As defined by entomologists, a fly is any species of insect of the Order Diptera. These typically have one pair of true wings, with the hind wings modified into halteres. Flies are common amongst humans and some can cause the spread of serious diseases such as sleeping sickness.
	Fly Orchid Fly orchid is a plant of the family Orchidaceae, a native of the British Isles and Europe favouring sites with alkaline soil. The name arises because it resembles a fly, being totally dependent on flies and bees for pollination. However this is fairly unsuccessful as they seldom visit the flower and it forms seed only infrequently.
	Flying boat A seaplane is an aircraft that is designed to take off and alight upon water. A flying boat is a type of seaplane which uses its fuselage as a floating Hull. Flying boats were among the largest aircraft of the first half of the 20th century. Their ability to alight on water allowed them to break free of the size constraints imposed by general lack of large, land-based runways, and also made them important for the rescue of downed pilots, a capability put to great use in World War II.
	Flying bomb A flying bomb is an Unmanned aerial vehicle or small aircraft carrying a large explosive warhead. In contrast to a bomber aircraft, which is intended to release bombs and then return to its base for re-use, a flying bomb crashes into its target and is therefore itself destroyed in its attack.
	Flying buttress In architecture, a flying buttress, or arc-boutant, is a butt, usually on a religious building, used to transmit the thrust of a vault across an intervening space, to a buttress outside the building. The employment of the flying buttress means that the load bearing walls can contain cut-outs, such as for large windows, that would otherwise seriously weaken the vault walls.
	Flying dragon The Flying Dragon is a lizard that lives in the rainforests of Asia and the East Indies. It can spread out folds of skin attached to its movable ribs to form "wings" that are uses to glide from tree to tree,and has been recorded to "fly" up to 50 meters. Its wings are brightly colored with orange, red and blue spots and stripes, and they provide camouflage when folded.
	Flying squirrel The flying squirrels, scientifically known as Pteromyini or Petauristini, are a tribe of squirrel. There are 43 species in this tribe, the largest of which is the Woolly Flying Squirrel. The 2 species of the genus Glaucomys are native to North America, and it is these that are commonly meant when the name "flying squirrel" is used in English, although the term is frequently also used by Europeans to refer to the Siberian flying squirrel.
	Flyleaf Flyleaf is an alternative rock band from Texas. The band and its members have previously played under several names including Listen, Sporos, The Grove, and Passerby. They became the most prominent in Texas under Passerby, but due to legalities, the name was changed to Flyleaf after they were signed.
	Flyswatter A flyswatter is a hand-held device for swatting fly and other insects. The modern flyswatter usually consists of a small square of lightweight, flexible, vented material, usually rubber or plastic, attached to a lightweight wire or plastic handle about 2 feet long. The venting allows the flyswatter to move more quickly through the air, making it easier to hit a fast-moving target such as a fly.
	Flywheel A flywheel is a heavy rotating disk used as a storage device for kinetic energy. They come as an alternative energy storage device. Flywheels resist changes in their rotation speed, which helps steady the rotation of the shaft when an uneven torque is exerted on it by its power source such as a piston-based, engine, or when the load placed on it is intermittent.
	Foal A foal is a young horse of either sex. A male foal can be called a Colt. A female foal can be called a filly. Healthy foals grow fast and can put on three Pounds or over a kilogram a day. A sound diet improves growth and leads to a healthier adult animal though genetics also plays a part.
	Foam The most general definition of foam is a substance that is formed by trapping many gas bubbles in a liquid or solid. It can also refer to anything that is analogous to such a phenomenon, such as quantum foam. Often people mean polyurethane foam, Styrofoam or some other manufactured foam when they are using the term.
	Foamflower The Foamflowers are a popular species of wildflower and garden plant. They belong to the Saxifrage family. Some species are: * Tiarella cordifolia * Tiarella trifoliata Many hybrids are known and cultivated. Reference * Alfred Pink
	Focal length The focal length of an optics system is a measure of how strongly it focuses or diverges light. A system with a shorter focal length has greater optical power than one with a long focal length.
	Fodder In agriculture, fodder or animal feed is any food that is used specifically to feed livestock, such as cattle, sheep, chickens and pigs. Most animal feed is from plants but some fodder is of animal origin.
	Foeniculum Foeniculum is a genus of less than half a dozen species, in the family Apiaceae. It is best known for Fennel, treated by some botanists as the sole species in the genus. The name of the genus is derived from Latin feniculum, fniculum, diminutive of fenum, fnum, "hay".
	Fog Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges. The foggiest place in the world is the Grand Banks off the island of Newfoundland, Canada.
	Foggy Bottom Foggy Bottom is one of Washington, DC's oldest 19th century neighborhoods, thought to have been named because, as a low-lying area, fog tended to concentrate there. It is located to the west of downtown DC in the Washington DC, bounded roughly by 17th Street to the east, Rock Creek Park to the west, Constitution Avenue to the south, and Pennsylvania Avenue to the north.
	Foghorn Foghorns are a navigation aid for Sailor. In foggy conditions, when visual navigation aids such as lighthouses are obscured by the weather, fog horns provide an audible warning of rock, headlands and bays, or other dangers to shipping. The first Automation steam-powered fog horn was invented by Robert Foulis of Saint John, New Brunswick, New Brunswick, Canada.
	Foie gras Foie gras is the fattened liver of a duck or goose that has been overfed. Along with truffles, foie gras is one of the greatest delicacies in French cuisineit is very rich and buttery, with a delicate flavour unlike that of a regular duck or goose liver. All animal rights organizations, and nearly all animal welfare organizations regard the production as cruelty to animals because of the force-feeding and the health consequences resultant from enlarged livers.
	Folic acid Folic acid and folate are forms of a water-soluble B vitamin. These occur naturally in food and can also be taken as supplements. Folate gets its name from the Latin word folium, leaf.
	Folk art Folk Art describes a wide range of objects that reflect the craft traditions, and traditional social values, of various social groups. Folk art is generally produced by people who have little or no academic artistic training and use established techniques and styles of a particular region or culture.
	Folk dance Folk dance is a term used to describe a large number of dances, mostly of European origin, that tend to share the following attributes: * They were originally danced in about the 19th century or earlier ; * Their performance is dominated by an inherited tradition rather than by innovation; * They were danced by common people and not exclusively by aristocracy;
	Folk music Folk music, in the original sense of the term, is music by and for the common people. Folk music arose, and best survives, in societies not yet affected by mass communication and the commercialization of culture. It normally was shared by the entire community , and was transmitted by word of mouth.
	Follicle A follicle is a term to describe a small spherical group of cells containing a cavity, and is often used as a descriptive term in biology, particularly in anatomy. Examples include hair follicles and ovarian follicles. In botany, the term is used to describe a dry fruit which Wiktionary:dehisces along one rupture site in order to release seeds, such as in larkspur, magnolia, banksia ,peony and milkweed.
	Follicle-stimulating hormone Follicle stimulating hormone is a hormone synthesised and secreted by gonadotropes in the anterior pituitary gland. In the ovary FSH stimulates the growth of immature Graafian follicles to maturation. As the follicle grows it releases inhibin, which shuts off the FSH production.
	Folly In architecture, a folly is an extravagant, useless, or fanciful building, or a building that appears to be something other than what it is. The term comes from the fact that such structures have often been dubbed "[name of architect or builder]'s Folly", in the sense of foolishness or madness.
	Fondue Fondue refers to several France Switzerland communal dishes shared at the table in an earthenware pot over a small burner. The term "fondue" comes from the French "fondre", referring to the fact that the contents of the pot are kept in a liquid state so that diners can use forks to dip into the sauce.
	Fontanelle | align="center" | |- | align="center" | |} In human anatomy, a fontanelle is one of two "soft spots" on a Infant human's skull. The skull of a newborn consists of five main bones: two frontal bones, two parietal bones, and one occipital bone. These are joined by fibrous sutures of skull, which allow movement that facilitates childbirth and brain growth.
	Food Food is any substance, usually comprised primarily of carbohydrates, fats, vitamins, water and/or proteins, that can be Eating or Drink by animals for nutrition and/or pleasure. Most cultures have a recognizable cuisine: a specific set of cooking traditions, preferences, and practices, the study of which is known as gastronomy.
	Food and Agriculture Organization The Food and Agriculture Organization is a specialized agency of the United Nations that works to raise levels of nutrition and standard of living; to improve the production, processing, marketing, and distribution of food and agricultural products; to promote rural development; and, by these means, to eliminate hunger.
	Food and Drug Administration The Food and Drug Administration is an agency of the United States Department of Health and Human Services and is responsible for regulating food , dietary supplements, Medications , cosmetics, medical devices and radiation emitting devices , Biopharmaceutical, and blood products in the United States.
	Food chain Food chains and food webs and/or food networks describe the feeding relationships between species in a biocoenosis. In other words, they show the transfer of material and energy from one species to another within an ecosystem. As usually diagrammed, an organism is connected to another organism for which it is a source of food energy and food by an arrow representing the direction of biomass transfer.
	Food coloring A food coloring is any substance that is added to food to change its color.
	Food court A food court is a type of indoor plaza contiguous with the counters of multiple food vendors and providing a common area for self-serve dining. In the United States, food courts became popular in the 1980s in shopping malls and airports. Food courts are sometimes found in other tourism areas, such as Quincy Market in downtown Boston, Massachusetts, an historic market that has been entirely converted to an indoor food court.
	Food for Thought "Food for Thought" is an episode of the Disney Channel TV series That's So Raven.
	Food processor A food processor is a kitchen appliance used to facilitate various repetitive tasks in the process of preparation of food. Today, the term almost always refers to an electric-motor-driven appliance, although there are some manual devices also referred to as "food processors". Food processors are similar to blender in many ways.
	Fool's Parsley Fool's Parsley is an annual plant herb in the plant family Apiaceae, native to Europe, western Asia and northwest Africa. It has a fusiform root and a smooth hollow branched stem growing to about 80 cm high, with much divided smooth Leaf with an unpleasant smell, and small compound umbels of small irregular white flowers.
	Foolproof Foolproof is a 2003 in film heist film written and directed by William Phillips and starring Ryan Reynolds, Kristin Booth, Joris Jarsky, and David Suchet. It was the first attempt by a Canadian studio to create a heist movie, in the same vein as Oceans 11.
	Foot The foot is a biological structure found in many animals that is used for locomotion.
	Football Football is the name given to a number of different, but related, team sports. The most popular of these worldwide is Football, which can be abbreviated soccer. The English language word football is also applied to rugby football, North American football, Australian rules football, and Gaelic football.
	Football helmet A football helmet is a protective device used primarily in American football and Canadian football. It consists of a hard plastic top with thick padding on the inside, a facemask made of one or more metal bars, and a chinstrap used to secure the helmet. Some players add polycarbonate visors to their helmets, which are used to protect the eyes from glare and impacts.
	Footbridge A footbridge is a bridge designed for pedestrians rather than vehicular traffic. An enclosed footbridge between two buildings is sometimes known as a skyway. Footbridges are often situated to allow pedestrians to cross water or railways in areas where there are no nearby roads to necessitate a road bridge, and also across busy roads to let pedestrians cross safely without slowing down the traffic.
	Foothills Foothills are geographically defined as gradual increases in hilly areas at the base of a mountain range. They are generally larger than hills, but not as tall as nearby mountains. Many neighborhood and community found in such a location are termed "the foothills".
	Footlights Cambridge University Footlights Dramatic Club, commonly referred to simply as the Footlights, is an amateur theatrical club in Cambridge, England, run by the students of University of Cambridge and now also the Anglia Ruskin University.
	Footprint Footprints are the impressions or images left behind by a person walking. Hoofprints and pawprints are those left by animals with hoof or paws rather than foot, while "shoeprints" is the specific term for prints made by shoes. They may either be indentations in the ground or something placed onto the surface that was stuck to the bottom of the foot.
	Footwear Footwear consists of garments worn on the foot. It is worn for a variety of reasons, including protective clothing against the environment, hygiene and adornment. Usually, socks and other hosiery are worn under footwear. It is sometimes associated with fetishism, particularly in some recent fashions in shoes and boots .
	Fop The fop is a stock character who appears from time to time in fiction. He is a person who makes a habit of fastidiously overdressing and putting on airs, aspiring to be viewed as an aristocrat. In English language, the word fop is older, but the meaning of an overdressed, frivolously fastidious man may not be; William Shakespeare's King Lear contains the word, in the general sense of a fool.
	FOP FOP is an XSL-FO processor written in Java programming language, which provides the feature to convert XSL-FO files to portable document format or direct-printable-files. FOP was originally developed by James Tauber who donated it to the Apache Software Foundation in 1999.
	For the First Time For the First Time was tenor star Mario Lanza's final film. Filmed on location in 1958 in Capri, Salzburg, Berlin and at the Rome Opera House, the film told the sentimental story of an operatic tenor who finds love for the first time with a young German woman, who happens to be deaf.
	Forage *Forage is the Herb plant material eaten by grazing animals. The major forage types: # Pasture # Rangeland # Hay # Silage *Forage can also be the nectar producing plants that are available for nectar gatherers, such as honeybees.
	Foraminifera The Foraminifera, or forams for short, are a large group of amoeboid protists with reticulating pseudopods, fine strands that branch and merge to form a dynamic net. They typically produce a shell, or test, which can have either one or multiple chambers, some becoming quite elaborate in structure.
	Forbidden City The Forbidden City or Forbidden Palace, located at the exact centre of the ancient city of Beijing, China was the imperial palace during the mid-Ming Dynasty and the Qing Dynasty Dynasties. Known now as the Palace Museum, its extensive grounds cover 720,000 square meters, 800 buildings and more than 8,000 rooms.
	Force play In baseball, a force is a situation when a baserunner is compelled to vacate his time of pitch base--and thus try to advance to the next base--because the baserunning. A runner at first base is always forced to attempt to advance to second base when the batter becomes a runner.
	Forceps Forceps are a hand-held instrument used for grasping and holding objects, similar in concept to tongs, tweezers or pincers. They are sometimes used in surgery or medical procedures, a common use for them being during childbirth. Although their use was common until the later part of the twentieth century, the use of forceps for delivery is falling out of favor in the birth community.
	Ford Madox Ford Ford Madox Ford was an English novelist and publisher. Born Ford Hermann Hueffer, he was Ford Madox Hueffer before he finally settled on the name Ford Madox Ford in honor of his grandfather, the Pre-Raphaelite painter Ford Madox Brown, whose biography he had written.