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From Citizendium, the Citizens' Compendium
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| Adenosine | ||
| Adenosine/Approval | Adenosine/Definition | Adenosine triphosphate |
| Adenosine triphosphate/Approval | Adenosine triphosphate/Definition | Adenoviridae |
| Adenoviridae/Approval | Adhesion plaques | Adhesion plaques/Approval |
| Adhesion plaques/Definition | ||
| Adinath Lokeshwar | Adinath Lokeshwar/Approval | Adipocyte |
| Adipocyte/Approval | Adipocyte/Definition | Adipocyte/Related Articles |
| Adipose tissue | Adipose tissue/Approval | Adipose tissue/Definition |
| Adiposopathy | Adjoint (disambiguation) | |
| Adjoint (operator theory) | Adjoint (operator theory)/Approval | Adjoint (operator theory)/Bibliography |
| Adjoint (operator theory)/Definition | Adjoint (operator theory)/Related Articles | |
| Adjunction formula | Adjunction formula/Approval | Adkins v. Children's Hospital |
| Administrative Review Board | Administrative Review Board/Approval | Administrative Review Board/External Links |
| Administrators-General of South West Africa | Administrators-General of South West Africa/Approval | Admiral |
| Admiral/Definition | Admiral/Related Articles | |
| Admiral Lee (disambiguation) | Adobe Walls, First Battle | |
| Adobe Walls, First Battle/Approval | Adolf Anderssen/Definition | Adolf Hitler |
| Adolf Hitler/Approval | Adolf Hitler/Bibliography | Adolf Hitler/Definition |
| Adolf Hitler/Related Articles | Adoption | |
| Adoption/Approval | Adoption/Bibliography | Adoption/Debate Guide |
| Adoption/Definition | Adoption/External Links | Adoption/Related Articles |
| Adrenal insufficiency | ||
| Adrenal insufficiency/Approval | ||
| Adrenergic beta-agonist | ||
| Adrenergic beta-antagonist | Adrenergic beta-antagonist/Definition | Adrenergic beta-antagonist/Related Articles |
| Adrenergic receptor | Adrenergic receptor/Approval | Adrenergic receptor/Definition |
| Adrenergic receptor/Related Articles | Adriana Lima | Adriana Lima/Approval |
| Adriatic Sea | Adriatic Sea/Approval | Adriatic Sea/Definition |
| Advaitanand Ji | Advaitanand Ji/Approval | |
| Advanced Encryption Standard | Advanced Encryption System/Definition | |
| Advanced Field Artillery Tactical Data System | Advanced Field Artillery Tactical Data System/Definition | Advanced cardiac life support |
| Advanced cardiac life support/Definition | Advanced cardiac life support/Related Articles | Advent |
| Advent/Approval | Advent/Definition | Advent Wreath/Definition |
| Adventures of Huckleberry Finn | Adventures of Huckleberry Finn/Approval | |
| Advertising | ||
| Aerobic organism | Aerobic organism/Approval | |
| Aerobic organism/Definition | Aeropyrum pernix | |
| Aeropyrum pernix/Approval | Aeropyrum pernix/Definition | Aerospace |
| Aerospace/Approval | Aerospace engineering | |
| Aerospace engineering/Approval | Aerospace engineering/Timelines | Aerostat |
| Aerostat/Approval | Aesthetics | Aesthetics/Approval |
| Aesthetics/Definition | Aesthetics/External Links | Aesthetics/Related Articles |
| Affine scheme | Affine scheme/Approval | |
| Affinity chromatography | Affinity chromatography/Bibliography | Affinity chromatography/Definition |
| Affinity chromatography/External Links | Affinity chromatography/Related Articles | |
| Affirmative action | Affirmative action/Approval | Affirmative action/Definition |
| Affirmative action/External Links | Affirmative action/Related Articles | Afghanistan |
| Afghanistan/Approval | Afghanistan/Definition | Afghanistan/Related Articles |
| Afghanistan War (1978-92) | Afghanistan War (1978-92)/Definition | |
| Africa | Africa/Approval | |
| Africa/Definition | Africa/External Links | Africa/Gallery |
| Africa/Related Articles | ||
| African American literature | African American literature/Approval | |
| African Great Lakes | ||
| African Great Lakes/Definition | African Union | |
| African philosophy | African philosophy/Approval | |
| Africanized bee | Africanized bee/Definition | |
| Afrikaans language | Afrikaans language/Definition | Against the Day |
| Against the Day/Approval | Against the Day/Definition | Agatha Christie |
| Agatha Christie/Approval | Agatha Christie/Definition | Agatha Christie/External Links |
| Age (disambiguation) | Age (geology) | |
| Age (geology)/Approval | Age of Empires | |
| Agency cost/Definition | Agency for Healthcare Research and Quality | Agency for Healthcare Research and Quality/Approval |
| Agency for International Development | Agency problem | Agency problem/Approval |
| Agency problem/External Links | Agency problem/Related Articles | AgentSheets/Definition |
| Agent Orange | Agent Orange/Definition | Agglutination test |
| Agkistrodon piscivorus conanti | Agkistrodon piscivorus conanti/Approval | Aglet |
| Aglet/Approval | Agnosia/Definition | Agnosticism |
| Agnosticism/Approval | Agnosticism/Bibliography | Agnosticism/Definition |
| Agnosticism/External Links | Agora | Agora/Approval |
| Agora/Definition | Agricultural crops | |
| Agricultural crops/Approval | Agricultural show | Agricultural show/Approval |
| Agriculture | Agriculture, history | Agriculture, history, U.S. |
| Agriculture, history, U.S./Approval | Agriculture, history/Approval | Agriculture, history/Bibliography |
| Agriculture, history/Definition | Agriculture, history/Draft | Agriculture, history/External Links |
| Agriculture, history/Related Articles | Agriculture/Approval | Agriculture/Definition |
| Ahcene Zemiri | Ahcene Zemiri/Approval | |
| Aichi D3A1 Val/Definition | ||
| Aichi prefecture | Aichi prefecture/Approval | |
| Aichi prefecture/Definition | Aikido | Aikido/Approval |
| Aikido/Definition | Aikinite/Chemical formula | |
| Air-to-air missile | ||
| Air-to-air missile/Approval | Air-to-air missile/Definition | Air-to-air missile/Related Articles |
| Air-to-surface missile | Air-to-surface missile/Definition | |
| Air Combat Command | Air Combat Command/Definition | Air Force |
| Air Force/Approval | Air Force/External Links | Air Force One |
| Air Force Special Operations Command | Air Force Special Operations Command/Definition | Air Mobility Command |
| Air Mobility Command/Definition | Air Quality Modeling Group | |
| Air Quality Modeling Group/Approval | Air Quality Modeling Group/Bibliography | Air Quality Modeling Group/Definition |
| Air Quality Modeling Group/External Links | Air Quality Modeling Group/Related Articles | Air Resources Laboratory |
| Air Resources Laboratory/Approval | Air Resources Laboratory/Bibliography | Air Resources Laboratory/Definition |
| Air Resources Laboratory/External Links | Air Resources Laboratory/Related Articles | |
| Air assault | Air assault/Approval | Air assault/Definition |
| Air assault/Related Articles | Air defense artillery | Air defense artillery/Definition |
| Air embolism | ||
| Air mobility | Air mobility/Definition | Air pollutant concentrations |
| Air pollutant concentrations/Approval | Air pollutant concentrations/Bibliography | Air pollutant concentrations/Definition |
| Air pollutant concentrations/External Links | Air pollutant concentrations/Related Articles | Air pollution dispersion modeling |
| Air pollution dispersion modeling/Approval | Air pollution dispersion modeling/Bibliography | Air pollution dispersion modeling/Catalogs |
| Air pollution dispersion modeling/Catalogs/Compilation of air pollution dispersion models | Air pollution dispersion modeling/Catalogs/Compilation of air pollution dispersion models/Definition | Air pollution dispersion modeling/Definition |
| Air pollution dispersion modeling/External Links | Air pollution dispersion modeling/Related Articles | |
| Air pollution dispersion terminology | Air pollution dispersion terminology/Approval | Air pollution dispersion terminology/Bibliography |
| Air pollution dispersion terminology/Definition | Air pollution dispersion terminology/External Links | Air pollution dispersion terminology/Related Articles |
| Air refueling | Air refueling/Definition | Air superiority |
| Air superiority/Definition | Air supremacy | Air tasking order |
| Air tasking order/Definition | Air warfare planning | Air warfare planning/Approval |
| Air warfare planning/Related Articles | Airborne (military)/Definition | Airborne Common Sensor |
| Airborne Common Sensor/Definition | Airborne Reconnaissance Low | Airborne Reconnaissance Low/Definition |
| Airborne Warning and Control System | Airborne Warning and Control System/Definition | |
| Airborne warning and control system | Airborne warning and control system/Definition | Aircraft |
| Aircraft/Approval | Aircraft/Definition | Aircraft carrier |
| Aircraft carrier/Definition | Airfoil | Airfoil/Approval |
| Airship | ||
| Airship/Approval | Airship/Definition | Airship/External Links |
| Aisne operations | Ajanta Caves | |
| Ajax (disambiguation) | Ajax (web technology) | |
| Ajax (web technology)/Bibliography | Ajax (web technology)/Definition | Ajax (web technology)/External Links |
| Ajax Framework | Akalabeth | Akalabeth/Approval |
| Akan Chieftaincy (Ghana) | Akan Chieftaincy (Ghana)/Approval | Akan Chieftaincy (Ghana)/Bibliography |
| Akan Chieftaincy (Ghana)/External Links | Akatek/Definition | Akathisia/Definition |
| Akira Iriye | Akira Iriye/Approval | |
| Akita prefecture | Akita prefecture/Approval | |
| Akita prefecture/Definition | Akpeteshie | Akpeteshie/Approval |
| Al-Qaeda/Definition | Al Franken | |
| Al Franken/Definition | Al Franken/Related Articles | Al Gore |
| Al Gore/Approval | Al Gore/Related Articles | |
| Al Smith | Al Smith/Approval | Al Smith/Bibliography |
| Al Smith/Definition | Alabama | Alabama, history |
| Alabama, history/Approval | Alabama/Approval | Alabama/Definition |
| Alameda, California | Alameda, California/Approval | Alamo |
| Alamo, Battle/Approval | Alamo/Approval | |
| Alamo/Definition | Alan Blumlein | Alan Blumlein/Approval |
| Alan Greenspan/Definition | Alan Odle | |
| Alan Odle/Approval | Alan fitz Walter, 2nd High Steward of Scotland | |
| Alan fitz Walter, 2nd High Steward of Scotland/Approval | Alanine | Alanine/Approval |
| Alanine/Definition | Alanine/Related Articles | Alanine cycle |
| Alanine cycle/Approval | Alanine cycle/Definition | Alaska |
| Alaska's At-large congressional district | Alaska's At-large congressional district/Approval | Alaska/Approval |
| Alaska/Definition | Alastair Sim/Definition | Albania |
| Albania/Approval | Albania/Definition | Albania/External Links |
| Albany | Albany/Approval | Albany Plan of Union/Definition |
| Alben Barkley | Alben Barkley/Approval | |
| Albert Eckstein | Albert Eckstein/Approval | |
| Albert Einstein | Albert Einstein/Approval | Albert Einstein/Bibliography |
| Albert Einstein/Definition | Albert Einstein/External Links | Albert Einstein/Related Articles |
| Albert Einstein and Turkey's refuge for eminent intellectuals during the 1930s/Approval | ||
| Albert Gallatin | Albert Gallatin/Approval | Albert Gallatin/Bibliography |
| Albert Gallatin/Definition | Albert Gallatin/External Links | Albert Gallatin/Related Articles |
| Albert Kesselring | Albert Ritchie | Albert Ritchie/Approval |
| Alberta | Alberta/Approval | Alberta/Definition |
| Alberta/External Links | Alberta/Related Articles | Alberto Gonzales |
| Alberto Gonzales/Approval | Alberto Gonzales/External Links | Alberto Santos-Dumont |
| Alberto Santos-Dumont/Approval | Albrecht Dürer | Albrecht Dürer/Approval |
| Albrecht Dürer/Works | Alcanivorax borkumensis | Alcanivorax borkumensis/Approval |
| Alcmaeon | Alcmaeon/Definition | Alcohol |
| Alcohol/Approval | Alcohol/Definition | Alcohol (drug) |
| Alcohol (drug)/Approval | Alcohol (drug)/Definition | |
| Alcohol withdrawal | Alcohol withdrawal/Definition | |
| Alcoholism | Alcoholism/Approval | |
| Alcoholism/Definition | Alcoholism/Related Articles | Alcor Life Extension Foundation |
| Alcor Life Extension Foundation/Approval | Alcor Life Extension Foundation/Definition | Alcor Life Extension Foundation/External Links |
| Alcor Life Extension Foundation/Related Articles | Alden Nowlan | Alden Nowlan/Approval |
| Alden Nowlan/Bibliography | Alden Nowlan/Related Articles | Aldo Leopold |
| Aldo Leopold/Approval | Aldo Leopold/Definition | Aldosterone |
| Aldosterone/Approval | Aldosterone/Definition | Aleph-0 |
| Aleph-0/Approval | Aleph-0/Bibliography | Aleph-0/Definition |
| Aleph-0/Related Articles | Alert, Nunavut | Alert, Nunavut/Definition |
| Alex Rodriguez | Alex Rodriguez/Approval | Alexander Calder |
| Alexander Calder/Approval | Alexander Calder/Bibliography | Alexander Calder/Definition |
| Alexander Calder/External Links | Alexander Fleming | Alexander Fleming/Approval |
| Alexander Fleming/Definition | Alexander Hamilton | Alexander Hamilton/Approval |
| Alexander Hamilton/Definition | Alexander Herzen | |
| Alexander Long | Alexander Long/Approval | |
| Alexander the Great | Alexander the Great/Approval | Alexander the Great/Definition |
| Alexandre Dumas | Alexandre Dumas/Approval | Alexandre Dumas/Definition |
| Alexandre Dumas/External Links | Alexandrium tamarense | Alexandrium tamarense/Approval |
| Alfred Adler | Alfred Adler/Definition | |
| Alfred Hitchcock | Alfred Hitchcock/Approval | |
| Alfred Hitchcock/Bibliography | Alfred Hitchcock/External Links | Alfred Hitchcock/Filmography |
| Alfred J. Eggers | Alfred J. Eggers/Approval | Alfred Kantorowicz |
| Alfred Kantorowicz/Approval | Alfred M. Gray, Jr. | Alfred M. Gray, Jr./Definition |
| Alfred Marshall | Alfred Marshall/Approval | Alfred Marshall/Bibliography |
| Alfred Marshall/Related Articles | Alfred Marshall/Works | Alfred Nobel |
| Alfred Nobel/Approval | Alfred Nobel/Definition | Alfred Russel Wallace |
| Alfred Russel Wallace/Approval | Alfred Russel Wallace/Bibliography | Alfred Russel Wallace/Definition |
| Alfred Russel Wallace/External Links | Alfred Russel Wallace/Related Articles | Alfred Schnittke |
| Alfred Schnittke/Approval | Alfred Thayer Mahan | Alfred Thayer Mahan/Approval |
| Alfred Thayer Mahan/Bibliography | Alfred Thayer Mahan/External Links | Alfred Thayer Mahan/Related Articles |
| Alfredo Stroessner | Algebra | Algebra/Approval |
| Algebra/Definition | Algebraic geometry | Algebraic geometry/Approval |
| Algebraic geometry/Definition | Algebraic number | Algebraic number/Approval |
| Algebraic number/Definition | Algebraic number/Related Articles | Algebraic surface |
| Algebraic surface/Approval | Algenib | Algenib/Approval |
| Algenib/Definition | Algeria/Definition | Algeria/Related Articles |
| Algerian Six | Algerian Six/Approval | Algerian Six/Definition |
| Algorithm | Algorithm/Approval | Algorithm/Bibliography |
| Algorithm/Definition | Algorithm/External Links | Algorithm/Related Articles |
| Alice Bailey | Alice Bailey/Approval | |
| Alipiopsitta xanthops (Yellow-faced Parrot) | Alipiopsitta xanthops (Yellow-faced Parrot)/Approval | |
| Alistair Darling | Alistair Darling/Approval | Alistair Darling/Definition |
| Alistair Darling/External Links | All-Africa Games | All-Africa Games/Definition |
| All-in-One PC | All-in-One PC/Approval | Allan Nevins |
| Allan Nevins/Approval | Allan Ramsay | Allan Ramsay/Definition |
| Allan Ramsay/External Links | Allan Ramsay (1686-1758)/Definition | Allegheny Portage Railroad |
| Allegheny Portage Railroad/Approval | Allele | Allele/Approval |
| Allele/Definition | Allelopathy | Allelopathy/Approval |
| Allen's rule | Allen's rule/Approval | Allen W. Dulles |
| Allen W. Dulles/Approval | Allergic rhinitis | Allergic rhinitis/Approval |
| Alliance of the Orders of St John of Jerusalem | Alliance of the Orders of St John of Jerusalem/Definition | |
| Alliance of the Orders of St John of Jerusalem/Related Articles | Allocative efficiency/Definition | Allopatric speciation |
| Allopatric speciation/Approval | Allotrope | Allotrope/Approval |
| Allotrope/Definition | ||
| Allotropy/Approval | Allozymes | |
| Allozymes/Approval | Almond Pressed Duck | |
| Almond Pressed Duck/Approval | Almond Pressed Duck/Definition | Almost sure convergence |
| Almost sure convergence/Approval | Almost sure convergence/Bibliography | Almost sure convergence/Definition |
| Almost sure convergence/Related Articles | Aloutte helicopter | Alpha Andromedae |
| Alpha Andromedae/Definition | Alpha Aquarii | Alpha Aquarii/Definition |
| Alpha decay | Alpha decay/Approval | Alpha decay/Definition |
| Alpha decay/Related Articles | Alphabet | Alphabet/Approval |
| Alphard | Alphard/Approval | Alphard/Definition |
| Alps | Alps/Approval | |
| Alps/Catalogs | Altan | |
| Altan/Bibliography | Altan/Definition | Altan/External Links |
| Altan/Related Articles | Altan/Video | |
| Alternative medicine | Alternative medicine/Approval | Alternative medicine/Definition |
| Alternative medicine/Related Articles | Altitude | Altitude/Approval |
| Altitude/Definition | Altruism | Altruism/Approval |
| Altruism/Definition | Aluminum | |
| Aluminum/Approval | Aluminum/Atomic mass | Aluminum/Atomic number |
| Aluminum/Atomic symbol | Aluminum/Boiling point | Aluminum/Definition |
| Aluminum/Electron configuration | Aluminum/Electronegativity | Aluminum/Elemental Class |
| Aluminum/Related Articles | Aluminum/Standard phase | Alvin Goldman |
| Alvin Goldman/Definition | Alvin Hansen | Alvin Hansen/Approval |
| Alvin M. Liberman | Alvin M. Liberman/Approval | Alvise Cadamosto |
| Alvise Cadamosto/Approval | ||
| Alzheimer's disease | ||
| Alzheimer's disease/Approval | Alzheimer's disease/Definition | Alzheimer's disease/Related Articles |
| Ama Ata Aidoo | Amancio Ortega | Amancio Ortega/Approval |
| Amanita phalloides | Amanita phalloides/Approval | |
| Amaranth | Amaranth/Approval | Amaryllis |
| Amaryllis/Approval | Amateur Computer Group of New Jersey | Amateur Computer Group of New Jersey/Approval |
| Amateur radio | Amateur radio/Approval | Amateur radio/Catalogs |
| Amateur radio/Catalogs/USA | Amateur radio/External Links | Amazon |
| Amazon Rainforest/Definition | Amazon River/Definition | |
| Amazonas | Amazons/Definition | Ambassador |
| Ambassador/Definition | Amber House | Amber House/Approval |
| Amber Neben | Amber Neben/Approval | Amber Neben/Definition |
| Ambiguity tolerance | Ambiguity tolerance/Approval | Ambush |
| Ambush/Definition | Amedeo Avogadro | Amedeo Avogadro/Approval |
| Amedeo Avogadro/Definition | AmeriCorps | AmeriCorps/Approval |
| America (disambiguation) | ||
| American Chemical Society | American Chemical Society/Approval | |
| American Chemical Society/Definition | American Chemical Society/Related Articles | American Civil Liberties Union |
| American Civil Liberties Union/Approval | American Civil Liberties Union/Definition | |
| American College of Physicians | ||
| American College of Physicians/Approval | American Conservatism/Approval | |
| American Conservatism/Related Articles | American Cryonics Society | |
| American Cryonics Society/Approval | American Cryonics Society/Definition | American Cryonics Society/External Links |
| American Cryonics Society/Related Articles | ||
| American English | American English/Approval | American English/Definition |
| American Expeditionary Forces | American Fair-play rules | American Fair-play rules/Approval |
| American Federation of Labor | American Federation of Labor/Approval | |
| American Institute of Chemical Engineers | American Institute of Chemical Engineers/Approval | American Institute of Chemical Engineers/Bibliography |
| American Institute of Chemical Engineers/Definition | American Institute of Chemical Engineers/Draft | American Institute of Chemical Engineers/External Links |
| American Institute of Chemical Engineers/Related Articles | American Liberty League | American Liberty League/Approval |
| American Liberty League/Bibliography | American Liberty League/Definition | American Oriental Society |
| American Oriental Society/Approval | American Oriental Society/Definition | American Psychiatric Association |
| American Psychiatric Association/Approval | American Psychiatric Association/Definition | American Psychiatric Association/External Links |
| American Red Cross/Definition | American Registry for Internet Numbers | American Registry for Internet Numbers/Definition |
| American Registry for Internet Numbers/External Links | American Registry for Internet Numbers/Related Articles | |
| American Revolution | ||
| American Revolution, military history | American Revolution, military history/Approval | American Revolution, military history/Bibliography |
| American Revolution, naval history | American Revolution, naval history/Approval | American Revolution, naval history/Bibliography |
| American Revolution/Approval | American Revolution/Bibliography | American Revolution/Definition |
| American conservatism | American conservatism/Approval | |
| American conservatism/Bibliography | American conservatism/Definition | American conservatism/External Links |
| American conservatism/Related Articles | American cuisine | |
| American cuisine/Approval | American cuisine/Bibliography | American cuisine/Catalogs |
| American cuisine/External Links | American election campaigns, 19th century | American election campaigns, 19th century/Approval |
| American football | American football/Approval | |
| American football/Definition | American football/External Links | American football/Related Articles |
| American football strategy | ||
| Americas (disambiguation) | ||
| Americium/Atomic mass | Americium/Atomic number | Americium/Atomic symbol |
| Americium/Boiling point | Americium/Electronegativity | Americium/Elemental Class |
| Americium/Standard phase | Amherst, Massachusetts | |
| Amherst, Massachusetts/Approval | Amikacin | Amikacin/Approval |
| Amikacin/Definition | Amine |