A barrier is something, either real or immaterial, that obstructs or prevents one thing from accessing another thing. A fence is a barrier in that it obstructs people from accessing what is on the opposite side of the fence. A cattle grid is a barrier to cloven-hooved animals, precenting their passage over the grid, while allowing vehicles and other animals free passage. Barrier creams are substances which prevent germs, water, the sun's rays or other substances from reaching the skin or a wound. In abstract terms, language can be a barrier to communication, if two people do not speak a common language then communication between them is seriously impaired and obstructed. Research Barrier
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General Information
Research Barrier