n. A white or colorless crystalline compound, SiO 2, occurring abundantly as quartz, sand, flint, agate, and many other minerals and used to manufacture a wide variety of materials, especially glass and concrete.ilicon dioxide, SiO 2, a compound that occurs widely in rocks and mineral forms, such as quartz, sand, and flint, and is used to make glass, concrete, and other materials.
Greater London is a ceremonial county of England. It was created on 1 April 1965, covering the 32 London boroughs, and excludes the City of London.The region covers 1,572 km 2 (607 sq mi) and had a population of 8,174,000 at the 2011 census. It has the highest GVA per capita in the United Kingdom at Â£37,232.he term London is normally used in reference to Greater London or to the conurbation, but not often to the ancient, tiny City of London. This small area is often referred to as the City or the Square Mile and it forms the main financial district.
London, England is located in the South-East of England upon the River Thames.More information: What's normally called London is actually a collection of cities, districts and towns. At the heart is the City of London (known in the UK as The City); this is the financial district.What most tourists think of as London is actually the City of Westminster (confusingly this is sometimes known as Town to Londoners) Parliament and the Queen's London residence is in Westminster.he City of London is the name of an area of London, where the stock markets are etc. London is a city, but the actual City of London is an area between East and Central Lon â¦ don. The City of London is only one square mile that formed the original city in Roman times.