Am

City (pop., 2002 est.: city, 641,076; metro. area, 1,896,741), western Germany. Located on the Main River, it was the site of a Roman military settlement in the 1st century AD. It served as a royal residence of the Carolingians from the 9th century through the Middle Ages. A free imperial city (1372–1806), it lost its status under Napoleon but regained it in 1815. It was the capital of Germany from 1816 until it was annexed by Prussia in 1866. Its Old Town, once the largest surviving medieval city in Germany, was mostly destroyed in World War II; some landmarks survive, including its red sandstone cathedral, dedicated in 1239. International trade fairs have been held in Frankfurt since 1240; in the modern era, book, automobile, and computer fairs are popular annual events. The city's manufactures include machinery and printing materials, as well as the high-quality sausages known as frankfurters. Frankfurt is the birthplace of Johann Wolfgang von Goethe.

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Synthetic radioactive chemical element, chemical symbol Am, atomic number 95. The fourth transuranium element discovered, it was first produced in 1944 from plutonium-239 in a nuclear reactor. The isotope americium-241 has been prepared in kilogram quantities and is used in a variety of measuring applications that utilize its gamma radiation. Its most familiar use is in household smoke detectors.

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AM, Am, or am may refer to:

• Master of Arts (postgraduate), (Artium Magister) alternative abbreviation for a Master's degree in Arts
• Americium, a chemical element with symbol Am
• Arthur-Merlin protocol, an interactive proof system in computational complexity theory
• Automated Mathematician, an artificial intelligence program
• Attometre (am), a unit of length (equal to 10^–18 m)
• Order of Australia member (postnominal)
• Accelerated Math in the US or Accelerated Maths in the UK

In engineering

• Advanced Manufacturing
• Avancier Method
• Application Management life cycle of computer application
• Amplitude modulation, the technique used for AM radio broadcasting

In medicine and psychology

• Adrenomedullin, a protein
• Autobiographical memory

In timekeeping

• Ante Meridiem, in 12-hour clock notation, Latin for "before noon" (also written A.M., a.m., and am), in contrast to post meridiem (p.m., "after noon")
• Anno Mundi, a Calendar era counting from the creation of the world
• Anno Martyrum, used in the Coptic calendar

In communications

• "Away message", see status message (IM)
• "Above mentioned" in Internet slang
• Airmail
• AM broadcasting, radio broadcasting using amplitude modulation

In entertainment

• AM (ABC Radio), radio current affairs programme
• A.M. (musician), musician Andrew Moore
• A.M. (album), album by rock band Wilco
• AM (fictional computer), a fictional evil supercomputer in the short story I Have No Mouth, and I Must Scream
• A minor (Am), a minor chord in music
• American Morning, the morning news program on CNN
• A fictional petroleum company in Grand Theft Auto: Liberty City Stories

In geography

• Americas (as in Pan-Am and Trans-Am)
• Armenia (ISO country code AM)
• Anguilla (MARC country code am)
• Amazonas State, Brazil
• Amharic language (ISO 639-1 language code am)
• Amran Governorate, Yemen (ISO 3166-2:YE)

In sports

• Attacking midfielder in soccer

In transportation

• Aston Martin
• Aeroméxico (IATA airline designator)
• Asia Miles, a Cathay Pacific travel reward programme
• Arkansas and Missouri Railroad, a short-line railroad headquartered in Springdale, Arkansas
• A.M. (1906 automobile), an early French automobile

In the military

• Air Marshal, a military rank in the Royal Air Force and many Commonwealth air forces
• Air Medal, a military decoration
• Minesweeper (ship), U.S. Navy 1921 warship classification code
• Anti-materiel rifle, a weapon for use against material rather than combatants

In UK Politics

• Assembly Member of the National Assembly for Wales or London Assembly

In computing

• .am, the top-level domain for Armenia

In finance

• Asset Management Assets Management

See also

• A&M
• AM2