a type of basalticrock, usually dark-colored with a jagged surface, formed in large sheets from slow-moving lava. It is one of two chief forms of rock emitted from volcanoThis article is about volcanoes geology. For the action movie see: Volcano (movie). A volcano (plural, volcanoes) is a geological landform (usually a mountain) where magma (rock of the earth's interior made molten or liquid by high pressure and temperatures of the Hawaiian type, the other being pahoehoe.
AA ("double A"), one of the standard sizes for dry cell batteryIn science and technology, a battery is a device that stores energy and makes it available in an electrical form. Although such storage in an electrostatic form is practical in some specialized uses, batteries usually consist of electrochemical devices su.
Afar languageAfar is an East Cushitic language spoken in Ethiopia, Eritrea and Djibouti. It is believed to have 1. 5 million speakers. Afar has the form Subject Object Verb. Its speakers have a literacy rate of between one and three per cent. Its closest relative is t ( ISO 639ISO 639 is one of several international standards that lists short codes for language names. ISO 639 consists of different parts, of which two parts are currently published. The other parts are works in progress. Parts of ISO 639 There are two items for I alpha-2, aa)
AlcoaThis article is about the company. For other uses, see Alcoa (disambiguation . Alcoa ( NYSE:AA) is an American company and one of the largest producers of aluminum. In 1894, Pittsburgh Reduction Company was established. This company changed its name to Al, stock symbol
Alcoholics AnonymousAlcoholics Anonymous (known commonly as "A. is a 12-step program designed to support alcoholics in their struggle to control their addiction to alcohol. It is the original model for all subsequent and separate 12-step programs such as Gamblers Anonymous,
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