| A&I | Allergy and Immunology 
| Others |
| A&I | Assembly & Installation
| Others |
| A&I | Assembly and Installation
| Others |
| A+I | Architecture + Interiors magazine
| Others |
| A.I. | Ad Interim (in the meantime)
| Others |
| A/I | Accident/Incident
| Others |
| AI | Aakash Institute
| Others |
| AI | Ab Initio
| Others |
| AI | Abhorrently Inept
| Others |
| AI | Abject Idiocy
| Others |
| AI | Abject Insanity
| Others |
| AI | Absent Indefinitely
| Others |
| AI | Absolute Idiots
| Others |
| AI | Absolutely Idiotic
| Others |
| AI | Absolutely Incomplete
| Others |
| AI | Abstract Indicator
| Others |
| AI | Abstracting and Indexing
| Others |
| AI | Abysmally Irritating
| Others |
| AI | Academy of Engineering (Mexico)
| Others |
| AI | Accent Insensitive
| Others |
| AI | Accidental Injury
| Others |
| AI | Accuracy International
| Others |
| AI | Acetabular Index
| Others |
| AI | Acquired Ichthyosis
| Others |
| AI | Acrosome Intact
| Others |
| AI | Acting In
| Others |
| AI | Action Instructions
| Others |
| AI | Action Item
| Others |
| AI | Active Information
| Others |
| AI | Active Ingredient
| Others |
| AI | Active Interface
| Others |
| AI | Actual Intelligence
| Others |
| AI | Actual Intelligences
| Others |
| AI | Actually Idiotic
| Others |
| AI | Acuerdo Interconfederal
| Others |
| AI | Acute Ileus
| Others |
| AI | Acute Incompetence
| Others |
| AI | Acute Infection
| Others |
| AI | Ad Interim
| Others |
| AI | Adapter Independent
| Others |
| AI | Additional Information
| Others |
| AI | Additional Information (Letter)
| Others |
| AI | Additional Information Letter
| Others |
| AI | Adequate Intake
| Others |
| AI | Adhesion Index
| Others |
| AI | Adiposity Index
| Others |
| AI | Adobe Illustrator
| Others |
| AI | Adrenal Incidentaloma
| Others |
| AI | Adrenal Insufficiency
| Others |
| AI | Advanced Integrated
| Others |
| AI | Advanced Interface
| Others |
| AI | Advocacy Institute
| Others |
| AI | Advocates International
| Others |
| AI | Affinity Index
| Others |
| AI | African Institute
| Others |
| AI | After Image
| Others |
| AI | Aggregation Index
| Others |
| AI | Aggressive and Intelligent
| Others |
| AI | Agitator Index
| Others |
| AI | AI is
| Others |
| AI | Ailing India
| Others |
| AI | Air India
| Others |
| AI | Air Interdiction
| Air Force |
| AI | Airborne Intercept
| Others |
| AI | Airborne Interception
| Others |
| AI | Airborne Interceptor
| Others |
| AI | Airbus Industrie
| Others |
| AI | Airway Inflammation
| Others |
| AI | Alberta Infrastructure
| Others |
| AI | Alchemical Intelligence
| Others |
| AI | Alcohol Intake
| Others |
| AI | Alcohol Involvement
| Others |
| AI | Algebraically Independent
| Others |
| AI | Alghanim Industries
| Others |
| AI | Algorithmic Identification
| Others |
| AI | Alien Intelligence
| Others |
| AI | Alien Invasion
| Others |
| AI | All Inclusive
| Others |
| AI | All Intentions
| Others |
| AI | Allelic Imbalance
| Others |
| AI | Allen Iverson
| Others |
| AI | Allen Iverson, basketball player
| Others |
| AI | Allergy Index
| Others |
| AI | Almost Implemented
| Others |
| AI | Already Informed
| Others |
| AI | Alveolar Interstitial
| Others |
| AI | Amazingly Inventive
| Others |
| AI | Ambulation Index
| Others |
| AI | Amelogenesis Imperfecta
| Others |
| AI | America, Incorporated
| Others |
| AI | American Idol
| Others |
| AI | American Ignorance
| Others |
| AI | American Indian
| Others |
| AI | Amnesty International
| Others |
| AI | Amplification Index
| Others |
| AI | AmtsInhaber
| Others |
| AI | Amylase Inhibitor
| Others |
| AI | Anal Incontinence
| Others |
| AI | Analog Input
| Others |
| AI | Anchorage Independent
| Others |
| AI | Andre Iguodala
| Others |
| AI | Androgen Independent
| Others |
| AI | Angel Investor
| Others |
| AI | Angiogenesis Inhibitor
| Others |
| AI | angiotensin I
| Others |
| AI | Anguilla
| Others |
| AI | Animal Instincts
| Others |
| AI | Anime Infinite
| Others |
| AI | Anisotropy Index
| Others |
| AI | Annual Incidence
| Others |
| AI | Another Incident
| Others |
| AI | Anthrozoology Institute (University of Southampton)
| Others |
| AI | Anti Income
| Others |
| AI | Anti Intelligent
| Others |
| AI | Anti-Inflammatory
| Others |
| AI | Anti-Intellectual
| Others |
| AI | Antibody Indices
| Others |
| AI | Aortic Incompetence
| Others |
| AI | Aortic Insufficiency
| Others |
| AI | Aorto-Iliac
| Others |
| AI | Aperture Index
| Others |
| AI | Aperture Indexing
| Others |
| AI | Apical Impulse
| Others |
| AI | Apoptotic Index
| Others |
| AI | Appenzello Interno
| Others |
| AI | Application Integration
| Others |
| AI | Appraisal Institute
| Others |
| AI | Appreciative Inquiry
| Others |
| AI | Arcade Infinity
| Others |
| AI | Area of Interest
| Others |
| AI | Army Instructor
| Others |
| AI | Aromatase Inhibitor
| Others |
| AI | Arthritis Index
| Others |
| AI | Articial Intellegance
| Others |
| AI | Artifical Ignorance
| Others |
| AI | Artificial Idiocy
| Others |
| AI | Artificial Idiot
| Others |
| AI | Artificial Ignorance
| Others |
| AI | Artificial Imagination
| Others |
| AI | Artificial Ingredients
| Others |
| AI | Artificial Insanity
| Others |
| AI | Artificial insemanation
| Others |
| AI | Artificial Insemination
| Others |
| AI | Artificial Intelligence
| Science, Technology, Computing |
| AI | Artificial Inventorship
| Others |
| AI | Artificially Inelegant
| Others |
| AI | Artificially intelligent
| Others |
| AI | As It
| Others |
| AI | Asian Invasion
| Others |
| AI | Assinine Incompetence
| Others |
| AI | Assist International
| Others |
| AI | Assistant Instructor
| Others |
| AI | Associate Instructor
| Others |
| AI | Associate Investigator
| Others |
| AI | Associated Infrastructure
| Others |
| AI | Association Induction
| Others |
| AI | Asymmetry Index
| Others |
| AI | Atherogenic Index
| Others |
| AI | Atherosclerotic Index
| Others |
| AI | Athletic Instructor
| Others |
| AI | Augmented Intelligence
| Others |
| AI | Authentic Idiocy
| Others |
| AI | authentic idioticy/ idiot
| Others |
| AI | Auto Indexing
| Others |
| AI | Auto Iris
| Others |
| AI | autoimmune
| Others |
| AI | Automated Inspiration
| Others |
| AI | Automated Intelligence
| Others |
| AI | Automatic Indexing
| Others |
| AI | Automatic Insertion
| Others |
| AI | Automatic Intelligence
| Others |
| AI | Avian Influenza
| Others |
| AI | Avidity Index
| Others |
| AI | Avoid Internationally
| Others |
| AI | Awe Inspiring
| Others |
| AI | Axio-Incisal
| Others |
| AI | Axonal Injury
| Others |
| AI | The Art Institute
| Others |
| AI | Vector graphics (Adobe Illustrator)
| Others |