| (AC) | Abdominal Circumference 
| Others |
| A&C | Activation and Checkout
| Others |
| A&C | Admin & Clerical
| Others |
| A&C | Administrative & Clerical
| Others |
| A&C | Alesaggio e Corsa
| Others |
| A&C | Antique and Classic
| Others |
| A.C. | after food (ante cibum) [Lat.]
| Others |
| A.C. | Ante Cibum (before meals)
| Others |
| a.c. | before a meal (Latin ante cibum)
| Others |
| A/C | Acceptance Criteria
| Others |
| A/C | Account Current
| Others |
| A/C | Air Conditions
| Others |
| A/C | Aircraft
| Others |
| A/C | Albumin/Creatinine ratio
| Others |
| A/C | Anterior Chamber of eye
| Others |
| A/C | Associate Contractor
| Others |
| AC | 'A' Complement
| Others |
| AC | Aaron Carr
| Others |
| AC | Aaron Curtis
| Others |
| AC | Abandoned Cat
| Others |
| AC | Abbreviations com
| Others |
| AC | Abdominal Circumference
| Others |
| AC | Abdominal Compression
| Others |
| AC | Abhay Charanaravinda, Swami
| Others |
| AC | Abnormally Cruel
| Others |
| AC | Absolutely Charming
| Others |
| AC | Absolutist Cutest
| Others |
| AC | Absorption Coefficient
| Others |
| AC | Abstinence Committed
| Others |
| AC | Ac Cobra
| Others |
| AC | Academic Community
| Others |
| AC | Academic Counsellor
| Others |
| AC | Acapella Choir
| Others |
| AC | Accademia del Cimento
| Others |
| AC | Accademia della Crusca
| Others |
| AC | Accelgor
| Others |
| AC | Acceptable Content
| Others |
| AC | Access Control
| Others |
| AC | Accommodations Code
| Others |
| AC | Accommodative Convergence
| Others |
| AC | Accounting Council
| Others |
| AC | acetate
| Others |
| AC | acetone
| Others |
| AC | acetyl
| Others |
| Ac | Acetyl Group
| Others |
| AC | acid
| Others |
| AC | Acoustic Coupler
| Others |
| AC | Acquisition cost
| Others |
| AC | Acre
| Others |
| AC | Acromio Clavicular
| Others |
| AC | AcromioClavicular
| Others |
| AC | Actinium
| Element |
| AC | Action Cat
| Others |
| AC | Action Center
| Others |
| AC | Activated Carbon
| Others |
| AC | Activated Charcoal
| Others |
| AC | Active Component
| Others |
| AC | Active Coronae
| Others |
| AC | Active Count
| Others |
| AC | Activity Center
| Others |
| AC | Activity Check
| Others |
| AC | Actual Cost
| Others |
| AC | Actual Count
| Others |
| AC | Acuity Cavern
| Others |
| AC | acupuncture
| Others |
| AC | Acute
| Others |
| AC | Acute Care
| Others |
| AC | Acute Cholecystitis
| Others |
| AC | Added Constraint
| Others |
| AC | Additional Charge
| Others |
| AC | Additional Content
| Others |
| AC | Adenylate Cyclase
| Others |
| AC | Adept Cosmetics
| Others |
| AC | Adherent Cell
| Others |
| AC | Adjuvant Chemotherapy
| Others |
| AC | Administration Committee
| Others |
| AC | Administrative Council
| Others |
| AC | Adrenal Cortex
| Others |
| AC | Adriamycin and Cytoxan
| Others |
| AC | Adriana Cool
| Others |
| AC | Adult Contemporary
| Others |
| AC | Advanced Credit
| Others |
| AC | Adventure Club
| Others |
| AC | Advisory Circular
| Others |
| AC | Advisory Committee
| Others |
| AC | Advisory Council
| Others |
| AC | Aerodynamic Center
| Others |
| AC | Aerodynamic Code
| Others |
| AC | Affordable Cars
| Others |
| AC | After Championship
| Others |
| AC | After Chemo
| Others |
| AC | After Class
| Others |
| AC | After Creation
| Others |
| AC | After Crowning
| Others |
| AC | After Cubs
| Others |
| AC | After the Cataclysm
| Others |
| AC | Agency Characteristic
| Others |
| Ac | Agriculture
| Others |
| AC | Agriculture Coffee
| Others |
| AC | Air Cadet
| Others |
| AC | Air Canada
| Others |
| AC | Air Cavalry
| Others |
| AC | Air Commander
| Others |
| AC | Air Condinationr
| Others |
| AC | Air Conditioner
| Others |
| AC | Air Conditioner / Air Conditioning
| Electronic Devices |
| AC | Air Conditioners
| Others |
| AC | Air Conditioning
| Others |
| AC | Air Conductioned
| Others |
| AC | Air Controller
| Others |
| AC | Air Cooled
| Others |
| AC | Air Cooling
| Others |
| AC | Aircraft Carrier
| Others |
| AC | Aircraft Commander
| Others |
| AC | Airframe Change
| Others |
| AC | Alan Cox
| Others |
| AC | Albany County
| Others |
| AC | Albert Champion
| Others |
| AC | Albert Clifford
| Others |
| AC | Alcohol Concentration
| Others |
| AC | Alcoholic Cirrhosis
| Others |
| AC | Algoma Central and Hudson Bay Railway
| Others |
| AC | Algoma Central Railway Incorporated
| Others |
| AC | AliCorn
| Others |
| AC | Align Centre
| Others |
| AC | All Clear
| Others |
| AC | All Conditions
| Others |
| AC | All Current
| Others |
| AC | Allan Carl
| Others |
| AC | Alley Cat
| Others |
| AC | Allied Committee
| Others |
| AC | Allis Chalmers
| Others |
| AC | Allyl Chloride
| Others |
| AC | Almost Country
| Others |
| AC | Alt Cataclius
| Others |
| AC | Alternate Character
| Others |
| AC | Alternate Current
| Others |
| AC | Alternating Current
| Electrical |
| AC | Alternative Care
| Others |
| AC | Alternative Current
| Others |
| AC | Alveolar Crest
| Others |
| AC | Alvin Crawford
| Others |
| AC | Always Connected
| Others |
| AC | Always Crap
| Others |
| AC | Amazing Cat
| Others |
| AC | Ambulance Chaser
| Others |
| AC | Ambulatory Care
| Others |
| AC | America's Cup
| Others |
| AC | American Coast
| Others |
| AC | Amherst County
| Others |
| AC | Ammonium Chloride
| Others |
| AC | Amplifier Combination
| Others |
| AC | Amplifier Combo
| Others |
| AC | an academic
| Others |
| AC | Anal Catch
| Others |
| AC | Analog Computer
| Others |
| AC | Analogue Computer
| Others |
| AC | Analyst Certification
| Others |
| AC | Analyst Console
| Others |
| AC | and CE
| Others |
| AC | Andersen Consulting
| Others |
| AC | Andrew Christian
| Others |
| AC | Andrew Colin
| Others |
| AC | Animal Control
| Others |
| AC | Animal Crossing
| Others |
| AC | Anne Cameron
| Others |
| AC | Annual Closing
| Others |
| AC | Annual Conference
| Others |
| AC | Anonymous Coward
| Others |
| AC | Another Cat
| Others |
| AC | Ante Cibum - before meals
| Others |
| AC | Antecubital
| Others |
| AC | Antecubital AC
| Others |
| AC | Anterior Chamber
| Others |
| AC | Anterior Commissure
| Others |
| AC | Anthropomorphic Colonialism
| Others |
| AC | Anti Christ
| Others |
| AC | Anticoagulation Clinic
| Others |
| AC | Antique Copper
| Others |
| AC | Antonio Carlos
| Others |
| AC | Antonio Catalan
| Others |
| AC | Aortic Compliance
| Others |
| AC | Apache Configurator
| Others |
| AC | Apparently Confused
| Others |
| AC | Appellate Court
| Others |
| AC | Application Context
| Others |
| AC | Applied Communication
| Others |
| AC | Applied Communications
| Others |
| AC | Aqua Color
| Others |
| AC | Aqueous Coating
| Others |
| AC | Arabinosyl Cytosine
| Others |
| AC | Arc Consistency
| Others |
| AC | Archaeological Conservancy
| Others |
| AC | Arctic Cat
| Others |
| AC | Area Code
| Others |
| AC | Area Command
| Others |
| AC | Area Consultant
| Others |
| AC | Area Coordinator
| Others |
| AC | Arizona and California
| Others |
| AC | Arm Circumference
| Others |
| AC | Armed Conflict
| Others |
| AC | Armed Constabulary
| Others |
| AC | Armor Class
| Others |
| AC | Armored Cable
| Others |
| AC | Armored Class
| Others |
| AC | Armored Convoy
| Others |
| AC | Armored Corps
| Others |
| AC | Army Cadet
| Others |
| AC | Army Company
| Others |
| AC | Army Component
| Others |
| AC | Aromatic Carbon
| Others |
| AC | Art Center
| Others |
| AC | Artificial Chariot
| Others |
| AC | Asbestos Cement
| Others |
| AC | Ascendant Cusp
| Others |
| AC | Ascending Colon
| Others |
| AC | Asheron's Call
| Others |
| AC | Ask com
| Others |
| AC | Asociacion Civil
| Others |
| AC | Asphalt Concrete
| Others |
| AC | Assembly Complete
| Others |
| AC | Assessment Center
| Others |
| AC | Assist Control
| Others |
| AC | Assist-Control (a form of mechanical ventilation)
| Others |
| AC | Assistant Camera
| Others |
| AC | Assistant Commissioner
| Others |
| AC | Associazione Calcio
| Others |
| AC | Associazione Circle
| Others |
| AC | Assumption College
| Others |
| AC | Assumption Context
| Others |
| AC | Assurance Check
| Others |
| AC | Athletic Club
| Others |
| AC | Atlantic City
| Others |
| AC | Atlantic Crossing
| Others |
| AC | Atrial Contraction
| Others |
| AC | Attack Cat
| Others |
| AC | Attack City
| Others |
| AC | Attendance Completed
| Others |
| AC | Attenuation Coefficient
| Others |
| AC | Audio Code
| Others |
| AC | Audio Coding
| Others |
| AC | Audio Computer
| Others |
| AC | Audit Commission
| Others |
| AC | Augmentative Communication
| Others |
| AC | Aunt Carol
| Others |
| AC | Aunt Christina
| Others |
| AC | Aunt Cindy
| Others |
| AC | Australian Curriculum
| Others |
| AC | Authenticast Comet
| Others |
| AC | Authorization Center
| Others |
| AC | Authorize Capture
| Others |
| AC | Auto Carrier
| Others |
| AC | Autoclave
| Others |
| AC | Autocraft Carroll
| Others |
| AC | Automatic Control
| Others |
| AC | Automation and Communications
| Others |
| AC | Autonomous Control
| Others |
| AC | Avoid Completely
| Others |
| AC | AVX Corporation
| Others |
| AC | Awesome Cool
| Others |
| AC | Awfully Crummy
| Others |
| AC | Axiom of Choice
| Others |
| AC | Ayala Corp
| Others |
| AC | Before Meals
| Others |
| AC | Collier (Auxiliary, Coal)
| Others |
| AC | Companion of the Order of Australia
| Others |
| AC | Comptroller Office
| Others |
| AC | The Art Clan
| Others |
| AC$ | Spooled plot file (AutoCAD AutoSpool)
| Others |