Page:U.S. Government Printing Office Style Manual 2008.djvu/254

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If abbreviations are required, use these forms:


 * 2,4D (insecticide)
 * 3d—third
 * 4°—quarto
 * 8°—octavo
 * A1 (rating)
 * A.A.—Alcoholics Anonymous
 * AARP—American Association of Retired Persons
 * abbr.—abbreviation
 * abs.—abstract
 * acct.—account
 * ACDA—Arms Control and Disarmament Agency
 * ACTH—adrenocorticotropic hormone
 * A.D.—(anno Domini) in the year of our Lord (A.D. 937)
 * ADDH—attention deficit disorder with hyperactivity
 * ADHD—attention deficit hyperactivity disorder
 * AEF—American Expeditionary Forces
 * AF—audiofrequency
 * AFB—Air Force Base
 * AFL-CIO—American Federation of Labor and Congress of Industrial Organizations
 * AID—Agency for International Development
 * AIDS—acquired immunodeficiency syndrome
 * a.k.a.—also known as
 * A.L.R.—American Law Reports
 * AM—amplitude modulation (no periods)
 * A.M.—(anno mundi) in the year of the world
 * A.M. or M. A.—master of arts
 * a.m.—(ante meridiem) before noon
 * Am. Repts.—American Reports
 * Amtrak—National Railroad Passenger Corporation
 * AM VETS—American Veterans of World War II; Amvet(s) (individual)
 * antilog—antilogarithm (no period)
 * AOA—Administration on Aging
 * API—American Petroleum Institute