definition barrier
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barrier Barriers are walls, either physical or metaphorical. They can block movement — the Great Wall of China was a barrier to block invading forces from entering. A window shade is a light barrier. Failing English is a barrier to getting into Harvard. When people are being excluded from joining a clique, you could say that the clique has erected a social barrier. When fighter jets fly faster than the speed of sound, they break through what feels like a wall in the sky called the sound barrier.
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blood-brain barrier Blood-brain barrier. A blockade of cells separating the circulating blood from elements of the central nervous system (CNS); it acts as a filter, preventing many substances from entering the central nervous system.he blood-brain barrier prevents or slows the passage of some drugs and other chemical compounds, radioactive ions, and disease-causing organisms such as viruses from the blood into the central nervous system.
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- Barrier is a summoner spell that is a self-targeted spell that shields your champion from damage for 2 seconds. is great for absorbing the burst of enemy champions. As much as a squishy mid-lanner as much a tanky top-lanner, , if used at the right moment, will save from tough situations.
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boundary noun. This fence forms a boundary. This fence forms a boundary. The definition of a boundary is a line or something else that marks a limit or border.An example of boundary is a barbed wire fence.he definition of a boundary is a line or something else that marks a limit or border.
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Sound barrier Sound barrier, sharp rise in aerodynamic drag that occurs as an aircraft approaches the speed of sound and that was formerly an obstacle to supersonic flight. If an aircraft flies at somewhat less than sonic speed, the pressure waves (sound waves) it creates outspeed their sources and spread out ahead of it.
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Vapor barrier A vapour barrier (or vapour barrier) is any material used for damp proofing, typically a plastic or foil sheet, that resists diffusion of moisture through wall, ceiling and floor assemblies of buildings to prevent interstitial condensation and of packaging.o, the use of vapor barrier should be taken into consideration. Their use has already been legislated within the building code of some countries (such as the U.S., Canada, Ireland, England, Scotland & Wales). How, where, and whether a vapor barrier (vapor diffusion retarder) should be used depends on the climate.
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- Freebase(0.00 / 0 votes)Rate this definition: A hurdle is a moveable section of light fence. Traditionally hurdles were made from wattle, but modern hurdles are often made of metal. Hurdles are used for handling livestock, as decorative fencing, for horse racing and in the track and field event of hurdling.
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- Examples of barrier in a Sentence. 1  Concrete barriers surround the race track to protect spectators. 2  The tree's roots serve as a barrier against soil erosion. 3  The mountain range forms a natural barrier between the two countries. 4  Both leaders are in favor of removing trade barriers.
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barrier island Any low sandy island that is parallel to the mainland and protects it from storms. (See Cape Hatteras.) Note: Barrier islands normally change location every ten to thirty years, a fact that makes coastline management a major problem in environmental policy.
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- Definition of barrier for English Language Learners. : something (such as a fence or natural obstacle) that prevents or blocks movement from one place to another. : a law, rule, problem, etc., that makes something difficult or impossible.
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- Definition of barrier. 1  1a : something material that blocks or is intended to block passage highway barriers a barrier contraceptiveb : a natural formation or structure that prevents or hinders movement or action geographic barriers to species dissemination barrier beaches drugs that cross the placental barrier.
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Physical Barriers to Communication Definition of Physical Barriers. Physical barrier is the environmental and natural condition that act as a barrier in communication in sending message from sender to receiver. Organizational environment or interior workspace design problems, technological problems and noise are the parts of physical barriers.
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- anything built or serving to bar passage, as a railing, fence, or the like: People may pass through the barrier only when their train is announced. 2. any natural bar or obstacle: a mountain barrier. 3. anything that restrains or obstructs progress, access, etc.: a trade barrier.
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- Mechanical barriers physically block pathogens from entering the body. The skin is the most important mechanical barrier. In fact, it is the single most important defense the body has.The outer layer of the skin is tough and very difficult for pathogens to penetrate.echanical barriers physically block pathogens from entering the body. The skin is the most important mechanical barrier. In fact, it is the single most important defense the body has.
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- Five reproductive barriers are habitat isolation, temporal isolation, gametic isolation, hybrid breakdown, and reduced hybrid fertility. barrier is an impediment or obstacle. Physical barriers can include walls or protective enclosures; materials that prevent the passage of substances; or a geographic separ … ation of regions.
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Native Americans 1. The first settlers in North America were Native Americans. Native Americans were the first people to settle in America. Christopher Columbus traveled to America in 1492. He traveled on a ship. In the 1600 s people from England came to live in America.he Native Americans helped the new settlers. They helped them plant food, fish, hunt and build houses. The Pilgrims celebrated the first Thanksgiving. They invited the Native Americans to celebrate with them. Many people from Europe came to America. Their towns were called colonies.
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- What are barrier islands? Barrier islands are long, relatively narrow islands that run along a coast parallel to the mainland. They are built up by the action of waves and currents and help protect the coastline from erosion by surf and tidal surges. Barrier islands occur all over the world but are especially prevalent along the Atlantic and Gulf coast of North America.
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- Hedges against a white fence. noun. The definition of a hedge is a boundary or fence formed by closely planted bushes or trees. An example of hedge is a line of bushes planted close together creating a border. Hedge is defined as something you do to minimize loss.
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What Is a Barrier Pipe? Adorable animal families that will make you aww. A barrier pipe is a type of plastic piping equipped with a built-in protective layer or coating. Without this extra layer of protection, oxygen and other gases could pass through the walls of the pipe, leading to corrosion within the plumbing system over time. barrier pipe is a type of plastic piping equipped with a built-in protective layer or coating.
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barrier : something (such as a fence or natural obstacle) that prevents or blocks movement from one place to another. Concrete barriers surround the racetrack to protect spectators. The tree's roots serve/act as a barrier against soil erosion. The mountain range forms a natural barrier between the two countries.
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fence Definition of fence for English Language Learners. : 1  a structure like a wall built outdoors usually of wood or metal that separates two areas or prevents people or animals from entering or leaving. : 2  a person who buys stolen property from thieves and sells it.
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Barrier cream Barrier cream. From Wikipedia, the free encyclopedia. A barrier cream, also known as shielding lotion, is a topical formulation used in industrial applications and as a cosmetic to place a physical barrier between the skin and contaminants that may irritate the skin (contact dermatitis or occupational dermatitis).
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- (See Cubist Painters, and 20th Century Sculptors.) Cubism was the starting point for, or an essential element in, a number of other modern art movements, including Futurism (1909-14), Orphism (1910-13), Vorticism (1914-15), Russian Constructivism, (c.1919-1932), and Dada (1916-1924).
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Physical Barriers of the Body Physical Barriers of the Body. The physical barriers on the surface of the body play a significant role in slowing or blocking microbial invasion. Very few microorganisms can penetrate intact skin; instead, invaders usually enter through wounds or by being injected, such as by mosquito bites. Skin wounds heal rapidly to reestablish the protective barrier.
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- See all translations. uk ​ /əbˈstrʌk.ʃən/ us ​ /əbˈstrʌk.ʃən/. › [ C or U ] something that blocks a road, passage, entrance, etc. so that nothing can go along it, or the act of blocking something in this way: There's some kind of obstruction on the railway tracks.
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What is the meaning of communication barrier? Asker's rating. Report Abuse. The word ‘barrier’ means a ‘thing that makes communication or good relationships between people difficult or impossible.’ Hurdles or problems which affect the transmission of information from the sender to the receiver in the communicative process are called communication barriers.