Mercantilism Mercantilism is the economic theory holding that the prosperity of a nation depends upon its supply of Capital , and that the world economy of trade is "unchangeable." The amount of capital, represented by bullion held by the state, is best increased through a positive balance of trade with other nations, with large exports and low imports.
	Mercaptopurine Mercaptopurine is an immunosuppressive drug used to treat leukemia. It is also used for pediatric non-Hodgkin's lymphoma, polycythemia vera, and psoriatic arthritis. It may also be used to treat inflammatory bowel disease.
	Mercator projection The Mercator projection is a Map projection#Cylindrical presented by the German geographer and cartographer Gerardus Mercator, in 1569, in a large planisphere measuring 202 by 124 cm, printed in eighteen separate sheets. Like in all cylindric projections, circle of latitudes
	Mercenaria Mercenaria is a genus of bivalve molluscs in the family Veneridae. It includes the quahogs, Mercenaria mercenaria, the northern quahog or hard clam and M. campechiensis, the southern quahog, which commonly hybridise where their ranges overlap. Other species include the venus clam M.
	Mercenary A mercenary is a soldier who fights, or engages in warfare primarily for private gain, usually with little regard for ideological, national or political considerations. However, when the term is used to refer to a soldier in a regular national army, it is usually considered an insult, epithet or pejorative.
	Merchant marine In most seafaring countries, the merchant marine is a fleet of ships used for commerce that sometimes complements the navy. These fleets may be divided into several categories, according to their purpose or size: * Dry cargo ships, which today are mainly bulk carriers and container ships.
	Mercurial Mercurial is the adjectival form of Mercury or mercury, and can mean either "volatile" or "of or related to Mercury", Mercury being either: *Mercury, the planet, *Mercury, the Roman god, *or mercury, the element. It can also refer to: *Mercurial, a cross-platform distributed source management tool.
	Mercurochrome Mercurochrome is the trade name of merbromin antiseptic tinctures made of merbromin and alcohol or water. Its antiseptic qualities were discovered by Johns Hopkins Physician Hugh Young in 1919. The chemical soon became popular among parents and doctors for everyday antiseptic uses and it was very commonly used for minor injuries in the schoolyard, where children nicknamed the tincture 'Monkey Blood'.
	Mercury poisoning Mercury poisoning, also known as mercuralism, is the phenomenon of toxication by contact with mercury. The main dangers associated with elemental mercury are that at standard conditions for temperature and pressure, mercury tends to oxidation forming mercury(II) oxide, and that if dropped or disturbed, mercury will form microscopic drops, increasing its surface area dramatically.
	Mercury-in-glass thermometer A mercury-in-glass thermometer is a thermometer consisting of mercury in a glass tube. Calibrated marks on the tube allow the temperature to be read by the length of the mercury within the tube, which varies according to the temperature. To increase the sensitivity, there is usually a bulb of mercury at the end of the thermometer which contains most of the mercury; expansion and contraction of this volume of mercury is then amplified in the much narrower bore of the tube.
	Mercury-vapor lamp A Mercury-vapor lamp is a gas discharge lamp which uses Mercury in an excited state to produce light. The arc discharge is generally confined to a small fused quartz tube mounted within a larger borosilicate glass bulb. The outer bulb may be clear or coated with a phosphor; in either case, the outer bulb provides thermal insulation, protection from ultraviolet radiation, and a convenient mounting for the fused quartz arc tube.
	Mercy Mercy can refer both to compassionate behaviour on the part of those in power or on the part of a humanitarian third party. Mercy is a term used to describe the leniency or compassion shown by one person to another, or a request from one person to another to be shown such leniency or compassion.
	Merge Merge, merging, or merger may mean: * a merger, the combination of two companies into one company * merger doctrine in law * phonemic differentiation#phonemic_mergers, a linguistic concept whereby two sounds that were originally separate phonemes come to be pronounced exactly the same
	Mergus Mergus is a genus of ducks in the seaduck subfamily Merginae. For an overview of the duck, goose and swan family of birds, see Anatidae. Although they are seaducks, most of the mergansers prefer riverine habitats, only Red-breasted Merganser being common on the sea.
	Meridian Meridian is: * Meridian : an imaginary circle perpendicular to the horizon. * Meridian : an important concept in traditional Chinese medicine. * Meridian : either half or a full great circle that connects the Earth's poles. Also 0 longitude. * Meridian : a polar coordinate system for the visual field.
	Meringue Meringue is a type of dessert, originally from France, made from whipping egg whites and caster sugar. Some meringue recipes call for adding a binding agent such as cream of tartar. Meringues are often flavoured with a small amount of essence, e.g., almond or coconut, or most commonly, vanilla.
	Merino The merino is the most numerous breed of Domestic sheep in the world. It is a breed prized for its wool, although more recently the low price of wool has led to more of an emphasis on carcass characteristics. Super fine merinos are regarded as having the finest and softest wool of any sheep.
	Meriones unguiculatus Meriones unguiculatus is a rodent belonging to subfamily Gerbillinae. They are the most widely known species of the Gerbil subfamily. Often called the Mongolian Gerbil or Mongolian Jird, due to its original habitat, it is the primary gerbil species to have been made a pet.
	Meriwether Lewis Meriwether Lewis was an United States List of explorers, soldier, and public administrator, best known for his role as the leader of the Lewis and Clark Expedition, whose mission was to explore the territory of the Louisiana Purchase.
	Merl Merl was a fictional character from the television series Angel and was a recurring character in the show's second season, to later be killed in the third season. He was portrayed by Matthew James and first appeared in the first episode of the second season: "Judgment".
	Merlin Merlin Ambrosius - also known in Welsh as Myrddin Wyllt , and besides as Merlin Caledonensis , Merlinus, and Merlyn - is best known as the mighty Wizard featured in Arthurian legends, starting with Geoffrey of Monmouth Historia Regum Britanniae.
	Mermaid A mermaid) is a legendary creature aquatic creature with the head and torso of human female and the tail of a fish. The male version of a mermaid is called a merman; the gender-neutral collective noun is merfolk. Various cultures throughout the world have similar figures.
	Merman Mermen are mythical male legendary creatures who are human from the waist up and fish-like from the waist down, whose consorts were their female counterparts, the more commonly known mermaids. In Greek mythology, mermen were often illustrated to have green seaweed-like hair, a beard, and a trident.
	Merostomata Merostomata is a class of marine Chelicerata which includes horseshoe crabs and eurypterids. It includes only four living species but dozens of fossil species mainly from the Paleozoic. The class Merostomata is slowly being abandoned in favour of splitting it into two classes, Xiphosura and Eurypterida.
	Merrimack River The Merrimack River is a 110-mile-long river in the Northeastern United States. It rises at the confluence of the Pemigewasset River and Winnipesaukee River rivers in Franklin, New Hampshire, flows southward into Massachusetts, and then flows northeast, near the Massachusetts-New Hampshire border, until it empties into the Atlantic Ocean at Newburyport, Massachusetts.
	Mertensia Mertensia is a genus of plants belonging to the Family Boraginaceae. There are about 40 species in the genus. This is one of several different plants that are commonly called Bluebell.
	Meryl Streep Meryl Streep is a double Academy Awards winning United States actor who has performed in movies, television and the theater. She is the most nominated performer in Academy Award history with 13 nominations. She is generally regarded as one of the most respected and talented actresses of her generation.
	Mesa A mesa is an elevated area of land with a flat top and sides that are usually steep cliffs. It takes its name from its characteristic table-top shape. It is a characteristic landform of arid environments, particularly the south-western United States and is generally formed when land has been uplifted by tectonics activity and then exposed to erosion.
	MESA Mathematics Engineering and Science Achievement is a current program that is building in schools around the United States. It is devoted to encouraging racial minority students or science majors to pursue math, science, and technology-related studies. In this program, students are mandated to study scientific findings of much consequence, as well as design many items for nationwide competitions of students.
	Mesa Verde National Park Mesa Verde National Park is a U.S. National Park in southwest Colorado, in the United States. The park occupies 81.4 square miles. and features numerous ruins of homes and villages built by Anasazi. It is well known for several spectacular cliff dwellings including Cliff Palace, which is thought to be the largest cliff dwelling in North America.
	Mescaline Mescaline is a Psychedelics, dissociatives and deliriants alkaloid of the phenethylamine class. It occurs naturally in the peyote cactus , the San Pedro cactus , in the Peruvian Torch cactus , and it is also found in a number of other members of the Cactaceae.
	Mesembryanthemum Mesembryanthemum is a genus of ornamental plants native to southern Africa.
	Mesencephalon In biological anatomy, the mesencephalon is the middle of three vesicles that arise from the neural tube that forms the brain of developing animals. Caudally the mesencephalon adjoins the pons and rostrally it adjoins the diencephalon. In mature human brains, the mesencephalon becomes the least differentiated, from both its developmental form and within its own structure, among the three vesicles.
	Meshwork Meshwork is the name of the fourth album by Germany band X Marks the Pedwalk. It was released by Zoth Ommog in Europe and Cleopatra Records in North America, both in CD format.
	Mesoamerica The term Mesoamrica is used to refer to a geographical region that extends roughly from the Tropic of Cancer in central Mexico down through Guatemala, Belize, Honduras, El Salvador, and Nicaragua to northwestern Costa Rica, and which is characterized by the particular cultural homogeneity that the indigenous cultures in this region exhibit.
	Mesocricetus Mesocricetus is a genus of Old World hamsters.
	Mesoderm The germ layer mesoderm forms in the embryos of animals more complex than cnidarians, making them triploblastic. Mesoderm forms during gastrulation when some of the cells migrating inward to form the endoderm form an additional layer between the endoderm and the ectoderm.
	Mesohippus Mesohippus Greek language lived some 25 to 40 million years ago in the Eocene and Oligocene. It had longer legs than its predecessor Hyracotherium and stood about two feet tall. It had also lost a toe and now stood predominantly on its middle toe, although the other two were also used.
	Meson In particle physics, a meson is a strong interaction boson, that is, it is a hadron with integral spin . In the Standard Model, mesons are composite particles composed of an even number of quarks and Antiparticles. All known mesons are believed to consist of a quark-antiquark pair the so-called valence quarks plus a "sea" of virtual quark-antiquark pairs and virtual gluons.
	Mesophyte Mesophytes are terrestrial plants which are adapted to neither a particularly dry nor particularly wet environment.
	Mesopotamia Mesopotamia refers to the region now occupied by modern Iraq, eastern Syria, and southeastern Turkey. The toponym comes from the Greek language words ?s?? "between" and p?ta?? "river, referring to the basins of the Euphrates and the Tigris rivers and the area in between.
	Mesosphere The mesosphere is the layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere. The mesosphere is located about 50-80/85km above Earth's surface. Within this layer, temperature decreases with increasing altitude. The main dynamical features in this region are the tides which are driven by momentum propagating upwards from the lower atmosphere and extending into the lower thermosphere.
	Mesquite Mesquite is a leguminous plant of the Prosopis genus found in the United States from the U.S.-Mexico border in Texas up to southwestern Kansas and from southeastern California and southwestern Utah to the southern limits of the Sonoran desert. Mesquite trees are also found in the Chihuahuan Desert of Mexico.
	MESS MESS is an acronym for Multiple Emulator Super System. MESS is an emulator for many game console and computer systems, based on the MAME core. The primary purpose of MESS is to preserve decades of computer and Video game console history. As technology continues to rush forward, MESS prevents these important vintage systems from being lost and forgotten.
	MESSENGER The MErcury Surface, Space ENvironment, GEochemistry and Ranging is a NASA mission, launched August 3, 2004, designed to study the characteristics and environment of Mercury from orbit. Specifically, the scientific objectives of the mission are to characterize the chemical composition of Mercury's surface, the geologic history, the nature of the magnetic field, the size and state of the core, the volatile inventory at the poles, and the nature of Mercury's exosphere and magnetosphere
	Messenger RNA Messenger Ribonucleic Acid is RNA that encodes and carries information from DNA during transcription to sites of protein synthesis to undergo translation in order to yield a gene product.
	Messidor Messidor was the tenth month in the French Republican Calendar. The month was named after the Latin word messis, which means harvest. Messidor was the first month of the summer quarter. It started June 19 or June 20. It ended July 18 or July 19. It follows the Prairial and precedes the Thermidor.
	Mestizo Mestizo is a term of Spanish language origin used to designate the people of mixed European and indigenous non-European ancestry. The term has traditionally been applied mostly to those of mixed European and indigenous Indigenous Peoples of the Americas ancestry who inhabit the region spanning the Americas; from the Canadian prairies in the north to Argentina and Chile's Patagonia in the south.
	Metabolism Metabolism is the Biochemistry modification of chemical compounds in life organisms and cell s. This includes the biosynthesis of complex Organic molecule molecules and their breakdown . Metabolism usually consists of sequences of enzyme steps, also called metabolic pathways.
	Metacarpus The metacarpus is the intermediate part of the hand skeleton that is located between the fingers distally and the carpus which forms the connection to the forearm. It consists of five cylindrical bones which are numbered from the radial to the ulnar side. * First metacarpal bone
	Metal In chemistry, a metal is an chemical element that readily forms positive ions and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons. The metals are one of the three groups of elements as distinguished by their ionisation and bonding properties, along with the metalloids and nonmetals.
	Metal detector * Mine detector * Airport security * UK Detector Finds Database * Portable Antiquities Scheme * Gold Prospectors Association of America
	Metallic bond Metallic bonding is the bonding within metals. It involves the delocalized sharing of free electron among a lattice of metal atoms. Thus, metallic bonds may be compared to molten salts. Metal atoms typically contain a high number of electrons in their valence shell compared to their period or energy level.
	Metalworking Metalworking is the craft and practice of working with metals to create parts or structures. The term covers a wide range of work-from large ships, bridges and oil refineries to delicate jewellery and instruments. Consequently, this craft covers a wide range of skills and entails the use of many types of tools.
	Metamorphic rock Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and extreme pressure causing profound physical and/or chemical change. The protolith may be sedimentary rock, igneous rock or another older metamorphic rock.
	Metamorphosis Metamorphosis is a biological process by which an animal physically developmental biology after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's form or structure through cell cell growth#Cell reproduction and cell differentiation.
	Metaphase Metaphase, from the ancient Greek eta and fas??, is a stage of mitosis in the Eukaryote cell cycle in which condensed chromosomes, carrying DNA sequence, align in the middle of the cell before being separated into each of the two daughter cells.
	Metaphysics Metaphysics is the branch of philosophy concerned with explaining the nature of the World_. It is the study of being or reality.Geisler, Norman L. "Baker Encyclopedia of Christian Apologetics" page 446. Baker Books, 1999 It addresses questions such as: What is the nature of reality? Existence of God God? What is man's place in the universe?
	Metasequoia Metasequoia glyptostroboides is a fast growing tree in the pinophyta family Cupressaceae native to the Sichuan-Hubei region of China. It is the only living species in the genus Metasequoia, but three fossil species are known. While the bark and foliage are similar to the related genus Sequoia, Metasequoia differs in that it is deciduous like Taxodium distichum, and like that, older specimens form wide buttresses on the lower trunk.
	Metastability Metastability is the ability of a non-equilibrium state to persist for some period of time. * See Metastability in molecules * See Phases of matter#Metastable phases * See Metastability in electronics * See Metastability in nuclear decay * See Metastability in the brain
	Metatarsus The metatarsus consists of the five long bones of the foot, which are numbered from the Anatomical terms of location side; each presents for examination a body and two extremities. These are analogous to the metacarpals of the hand.
	Meteor A meteor is the visible path of a meteoroid that enters the Earth Earth's atmosphere, commonly called a shooting star or falling star.
	Meteor shower A meteor shower, some of which are known as a "meteor storm", "meteor outburst", or "shooting star", is a celestial event where a group of meteors are observed to radiate from one point in the sky. These Meteoroid are small fragments of cosmic debris entering Earth's atmosphere at extremely high speed.
	Meteorite A meteorite is an extraterrestrial body that survives its impact with the Earth's surface without being destroyed. While in space it is called a meteoroid. When it enters the atmosphere, air resistance causes the body to heat up and emit light, thus forming a fireball, also known as a meteor or shooting star.
	Meteorology Meteorology is the scientific study of the Earth's atmosphere that focuses on weather processes and forecasting. Meteorological phenomenon are observable weather events which illuminate and are explained by the science of meteorology. Those events are bound by the variables that exist in Earth's atmosphere.
	Metformin Metformin is an anti-diabetic drug from the biguanide class.
	Methacrylic acid Methacrylic acid, or 2-methyl-2-propenoic acid, is a low molecular weight carboxylic acid that occurs naturally in small amounts in the oil of Roman chamomile. It is a corrosive liquid with an acrid unpleasant odor. It is soluble in warm water and miscible with most organic solvents.
	Methadone Methadone is a synthetic opioid, used medically as an analgesic and in the treatment of narcotic addiction. It was first brought to market by the pharmaceutical company Eli Lilly and Company.
	Methamphetamine Methamphetamine is a psychostimulant psychoactive drug used primarily for recreational drug use purposes, but is sometimes prescribed for ADHD and narcolepsy under the brand name Desoxyn. Methamphetamine is highly psychologically drug addiction.
	Methane The simplest hydrocarbon, methane, is a gas with a chemical formula of CarbonHydrogen4. Pure methane is odor, but when used commercially is usually mixed with small quantities of odorants, strongly-smelling sulfur compounds such as ethanethiol , to enable the detection of leaks.