AH

From Free net encyclopedia

AH may mean:

• After Hours, in reference to stock trading
• Air Algérie (IATA airline designator)
• Anno Hegirae, indicating that a date is from the Islamic calendar
• Apocalyptic Harbingers, A clan on Battle.net
• Attack Helicopter (U.S. military designation; e.g. AH-1 Cobra)
• Auction House, especially in many MMORPGs
• Authentication Header, the IPsec protocol designed to guarantee integrity and authenticity
• Avalon Hill (more properly TAHGC, "The Avalon Hill Game Company"), pioneering American publisher of wargames (1958–1998), whose brand name is now used by Hasbro/Wizards of the Coast
• Hospital Ship (US Navy hull classification symbol)
• US Navy attack bomber designation for the F-4 Phantom II
• Adolf Hitler
• American History
• After Hijra, refers to the years after Muhammad made the pilgrimage to Medina; used in the Islamic calendar

Ah may mean:

• ampere-hour, an unit of electric charge

aH may mean:

• attohenry, an SI unit of inductance

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