What does AF stand for?

Abbott Family - Association (EA)

Abbreviated Form - Military technology (DDF)

Abnormal Frequency

Abortion Fund (EA)

About Face - An association (EAIO)

Absolute Function (SAUS)

Absorbing Field (SAUS)

Absorbing Filter (SAUS)

Absorption Fading (SAUS)

Absorption Filter (SAUS)

Acanthosis Factor (MELL)

Accokeek Foundation (EA)

Accounting Form (SAUS)

Accumulation Factor (DEN)

Accuracy Factor (SAUS)

Accuracy Figure - British and Canadian - World War II

Acid-Fast - Microbiology

Acoustic Feedback (ELAL)

Acoustic Filter (ELAL)

Acre-Feet (ADWA)

Acre-Foot

Across Flats

Action Figure

Activating Factor - Biochemistry

Active Filter (ELAL)

Activity File (SAUS)

Actum Fide - Done in Faith - Latin (WGA)

Addison Foster - Record label

Addition Formula (SAUS)

Address Family (VLIE)

Address Field - Computer science (ELAL)

Address File (SAUS)

Address Format (SAUS)

Address Frame (SAUS)

Addressing Format (SAUS)

Ad Finem - At or To the End - Latin

Administrative Function (SAUS)

Admiral of the Fleet - British

Adult Female (HGAA)

Adult Fiction - Library science (TELE)

Advance Freight - Shipping

Adventures in Fantasy (SAUS)

Aeronautically Fixed

A Favor - In Favor - Spanish

Afebrile - Medicine (MELL)

Affiliate (SAUS)

Affiliation of Author - Online database field identifier

Affiliation of First Author - Used to define searchable field (NITA)

Affirmative Flag - Navy - British

Affix - Linguistics

Afghani - Monetary unit - Afghanistan

Afghanistan - NCIC country-territory code (NCIC)

Aflatoxin - A toxic factor - Biochemistry (DAVI)

A-Frame

Afram Films (NTPA)

Africa

- The Africa Fund (EA)

After - Telegraphy (PCTE)

After Ford - Calendar used in Aldous Huxley's novel, "Brave New World;" refers to Henry Ford

Aft Fuselage (NASA)

Agape Force (EA)

Aggregation Factor - Biochemistry

Agricultural Forecaster (NOAA)

Agri-residue used for animal Feed (SAUS)

Agriservices Foundation (EA)

Air Fall (SAUS)

Airfile (SAUS)

Air Filter

Air Fitter (SAUS)

Air Flight (SAUS)

Air Forager - Ornithology

Air Force

Air Foundation

Air Frame (MCD)

Air France - ICAO designator

Air-to-Fuel Ratio (MCD)

Airway Facilities - FAA (TAG)

Alabama & Florida Railway - Federal Railroad Administration identification code

Albumin-Free - Medicine

Aldehyde Fuchsin - A dye

Aldehyde-Fuchsin (SAUS)

Ale Firkin - Unit of measurement (ROG)

Al Fine - To the End - Music

Algebraic Function (SAUS)

Allied Forces (SAUO)

Alphabetic Field (SAUS)

Alphabetic File (SAUS)

Alpine Fir - Lumber (WOHB)

Alternating Field

Alternating Flow

Alternative Fertility - Demography

Alternative Forum - An association (EAIO)

Alternative Frequencies (or Frequency) (SAUS)

Aluminium Federation

Amaurosis Fugax - Medicine (DMAA)

Ambassador for Friendship (SAUO)

Ambassadors for Friendship (EA)

America First (EA)

American & Foreign Power Company, Inc. (SAUO)

American Fabrics - A publication (SAUS)

American Forests - A publication (BRI)

Americanism Foundation - Norwalk, OH (EA)

Americares Foundation (EA)

America's Foundation (EA)

America's Future - New Rochelle, NY (EA)

Amerind Foundation (EA)

Aminofluorene - Also, FA - Carcinogen

Amniotic Fluid - Obstetrics

Amphibious Force (SAUS)

Amphiphilic Flavin - Chemistry

Amplification Factor

Amplitude Fading (ELAL)

Anaerobic Filter - A form of anaerobic digester

Anarchist Federation - British

Ancestral File - Database (GDD)

Anchoring Fibril - Anatomy

Angelini Francesco - Italy - Research code symbol

Angiogenesis Factor - Biochemistry

Angle Frame (OA)

Anglo-French - Language, etc.

Anglo-Frisian - Language, etc.

Anisotropische Filtering

Anno Futuro - In the Next Year - Latin (ADA)

Anterior Fontanelle - Neonatology and pediatrics (DAVI)

Anterior - Part of Foot

Antibody-Forming - Immunology (MAE)

Antiferromagnetic

Anti-Foam (SAUS)

Anti-Fouling Paint (DNAB)

Anti-Friction - Lubricants

Aortic Flow - Cardiology

Appalachian Forum - An association (EA)

Apparent Fault (SAUS)

Apply Force - Industrial engineering

Appropriated Funds

Arcuate Fasciculus - Medicine (RAWO)

Area Weapon Forward (MCD)

Argentina Fund - NYSE symbol (SPSG)

Aristos Foundation (EA)

Arithmetical Function (SAUS)

Arithmetic Flag - Computer science (ELAL)

Arithmetic Flag Aspect Factor (MHDI)

Armed Forces

Army Force

Army Form

Arpad Federation (EA)

Array Factor (SAUS)

Arterial Filter (DB)

Arthritis Foundation (EA)

Artificially Fed

Artilleriefuehrer - Division artillery commander - German military - World War II

Artists' Fellowship (EA)

Ash Fall (SAUS)

Asian Female (MELL)

Asiatic Fleet - Obsolete - Navy

Aspect Factor (PDAA)

Assembly and Fabrication

Assembly Fixture (MCD)

Associate Fellow (ADA)

Associational Fluency - Personality research - Psychology

Assured Forwarding

Astoria Financial Corp. - NYSE symbol

Asymmetry Factor - Mathematics

Atlantic Fleet (SAUO)

ATM Forum (SAUS)

Atmospheric Flight

Atomic Fluorescence

Atomic Forum (IEEE)

Atrial Fibrillation - Cardiology

Attenuation Factor (SAUS)

Attiyeh Foundation (EA)

Audio Fidelity (NTCM)

Audio Frequency - Data transmission

Audiofrequency (SAUS)

Augmented Final Fade (SAA)

Auranofin - An organogold

Auricular Fibrillation - Medicine

Aurora Foundation (EA)

Australia First - Political party

Austrian Forum - Defunct (EA)

Auto-Fiche (MCD)

Autofocus - Cameras

Automatic Filter (ADA)

Automatic Focusing - Photography

Automatic Follower (or Following) (SAUS)

Automatic Following - RADAR

Automation Foundation

Auxiliary Carry Flag (VERA)

Auxiliary Feed - Nuclear energy (NRCH)

Auxiliary Feedwater - Nuclear energy (NRCH)

Auxiliary Field (MUGU)

Availability Factor - Generating time ratio (IEEE)

Aviation Forum - British

Aviation Photographer's Mate - U.S. Navy enlisted rating (AUER)

Avulsion Fracture - Medicine (MELL)

Award Fee

Axial Flow (AAG)

Axillary Fossa - Medicine (MELL)

Axle Flange Gasket - Automotive engineering

Axle Fluid (SAUS)

Damien Foundation (SAUO)

Department of the Air Force (SAUO)

European Aspirin Foundation - Association - United Kingdom (EAIO)

Flug & Fahrzeugwerke AG Altenrhein - Switzerland - ICAO aircraft manufacturer identifier (ICAO)

Forestburg Public Library, Alberta - Library symbol - National Library of Canada (NLC)

Office of Alcohol Fuels - Department of Energy

Store Ship - Navy symbol

Afghan (ADWA)

African - Derogatory nickname for blacks in Zimbabwe and South Africa

Aruban Florin - Monetary unit (ODBW)

Aspergillus fumigatus - A fungus

Atrial Flutter - Cardiology

Frontal Area - Automotive engineering

Affidavit (GEAB)

Affix (ADWA)

Afghanistan - MARC country of publication code - Library of Congress (LCCP)

At Fault (DI)

Audio Frequency (ABAC)

Siam, Gulf of - MARC geographic area code - Library of Congress (LCCP)