What does Ia stand for?

Immune Region Associated Antigen - Immunology

Immune Response Gene-Associated Antigen - Immunology (DAVI)

Iowa (BEE)

Iowa State Library Commission, Des Moines, IA - Library symbol - Library of Congress (LCLS)

Intraarterial - Medicine (DB)

Comando de Material - Fabrica Militar de Aviones - Argentina - ICAO aircraft manufacturer identifier (ICAO)

IATA - International Air Transport Association Containers - Shipping (DCTA)

Ibotenic Acid - Organic acid (DMAA)

Ice Age

Identical Additional (SAUS)

Identification and Authentication (SAUS)

Ileostomy Association of Great Britain and Ireland

Image Acquisition - Computer graphics

Image Amplification - Radiology (DAVI)

Image Amplifier (SAUS)

Image Analysis (SAUS)

Image Array (SAUS)

Imagery Analyst (MCD)

Images Asia (HRYB)

Im Auftrage - By Order Of - German

Imitation Art Paper (DGA)

Immediate Access (IAA)

Immediate Action - Military

Immediate Annuity

Immediately Available

Immune Adherence - Immunology

Immunoadsorbent - Medicine (MELL)

Immunoassay (ABAC)

Immunobiologic Activity - Immunology (AAMN)

Impact Analysis - Emergency Management (EMA)

Impedance Angle

Imperial Airways (SAUO)

Imperial Airways Ltd. - British (ADA)

Implementation Agency (SAUS)

Implementation Agreement (VLIE)

Implementation Arrangement (SAUS)

Implementing Agency (KSC)

Implied Association (SAUO)

Import Administration

Import Annual Data - Department of Commerce (GFGA)

Impotents Anonymous (EA)

Improvement Assessment - Recycling

In Absentia - In Absence - Latin

Inactive Account - Banking

Inactive Aerospace Vehicle - or Aircraft

Incentive Award - Military

Incident Actions - Environmental science (COE)

Incidental Appendectomy - Medicine

Income Averaging (MHDB)

Incoming Access (SAUS)

Incorporated Accountant

Incremental Analysis - Statistics

Incurred Accidentally - Medicine (MEDA)

Independent Action (EA)

Independent Americans (EA)

Index Accumulator (SAUS)

Index Analyzer (SAUS)

Index Array (IAA)

India Alert - An association (EA)

Indiana - Obsolete (ROG)

Indian Affairs (DLA)

Indian Airlines (PDAA)

Indian Army

Indian Artillery - British military (DMA)

Indicated Altitude - Navigation

Indicator of Authoritativeness - Library symbol

Indirect Address (NITA)

Indirect Addressing

Individual Assistance (DEMM)

Indo-Aryan - Linguistics

Indolaminergic-Accumulating - Cytology (DAVI)

Indolic Acid (MELL)

Indulin Agar - Microbiology

Industrial Accounting (SAUS)

Industrial Application (SAUS)

Industrial Artists (SAUS)

Industrial Arts (OICC)

Industrial Arts Education (SAUO)

Industry Application (IAA)

Infantile Apnea - Medicine (MELL)

Infected Area

Infectious Arthritis (MELL)

Inferior Angle - Anatomy

Information Addressee (SAUS)

Information Agency

Information America - Information service or system (IID)

Information Anxiety (SAUS)

Information Appliance (SAUO)

Information Approximation (SAUS)

Information Architecture (SAUO)

Information Association (COE)

Information Assurance

Informations Acquisition (SAUS)

Infra-Audible - Sound

Infrastructure Analyst (SAUS)

Ingenious Addressing (SAUS)

Inhalation Anesthesia (MELL)

Inherent Address (SAUS)

Initial Allowance (SAUS)

Initial Appearance - RADAR

Initial Assessment - Environmental science (COE)

Initial Authorization

Initiative America (EA)

Input Acknowledge (MCD)

Input Axis (KSC)

Insertion Approval (NRCH)

Inspection Administration - Navy

Inspection Authorization (GAVI)

Inspector of Armourers (SAUO)

Inspiratory Assistance (SAUS)

Institut de l'Amiante - Asbestos Institute - AI (EA)

Institute of Actuaries - British

Institute of Aging - Canadian Institutes of Health Research - Canada (RCD)

Institute of Architects - Australia

Instruction Address - Computer science

Instructional Aide (SAUS)

Instructional Allowance - British military (DMA)

Instruction Alignment (SAUS)

Instruction Area (SAUS)

Instruction Array (SAUS)

Instructions for Armourers (SAUO)

Instrument Abstracts

Instrument Air - System - Nuclear energy (NRCH)

Instrumental Analysis (SAUS)

Instrumentation Amplifier (IEEE)

Insulin Antibody - Immunology

Insurance Adjustment

Intangible Asset - i.e., Patented rights

Integrated Adapter

Intel Architecture (SAUS)

Intelligence Analysis

Intelligence Annex (SAUS)

Intelligence Assessment (DOMA)

Intelligent Actuatot (ACII)

Intelligent Agent

Intelligent Assistant - Computer science

Intelligenzalter - Mental Age - Psychology

Intemperate to Alcohol - An alcoholic - Slang

Inter-Action (MCD)

Interagency Agreement (GNE)

Inter Aide - France (BUAC)

Inter Alia - Among Other Things - Latin

Inter-American (ODA)

Intercept Arm (MUGU)

Interceptor Aviation (SAUS)

Intercessors for America (EA)

Interchangeable Alternate

Interchange Address (NITA)

Interciencia Association - Caracas, Venezuela (EAIO)

Intercity Airways - Australia

Intercoiffure America (EA)

Interconnection Agreement

Intercultural Awareness

Interface Accepted (SAUS)

Interface Agreement

Interface Amplifier

Interflora Australia

Interim Action - Environment term (AUEG)

Intermediate Air - Combustion

Intermediate Amplifier

Intermediate Area (SAUS)

Internal Affairs (SAUS)

Internal Audit

Internal Auditory (Ear)

International Activities

International Affairs. Moscow - A publication (SAUS)

International Affiliation of Independent Accounting Firms - Later, Independent Accountants International (EA)

International Alert (EA)

International Alliance of Theatrical Stage Employees (NTCM)

International Alliance of Theatrical Stage Employees and Motion Picture Machine Operators of the United States and Canada (SAUO)

International Alliance of Theatrical Stage Employees and Moving Picture Machine Operators of the United States and Canada

International Alphabet

International Angstrom

International Atlas (SAUS)

Internet Alliance - Association (EA)

Interpretive Authority (SAUS)

Intersite Architecture (SAUS)

Intertech Associates, Inc. - Commercial firm

Interval Arithmetic (VLIE)

Interval Availability

Interworking Implemantation Agreement (SAUO)

Intra-Amniotic - Medicine (AAMN)

Intra Aortic - Cardiology (MAE)

Intra Arterial (SAUS)

Intra-Arterial - Cardiology

Intra-Articular - Medicine

Intra-Atrial - Cardiology

Intra-Auricular - Cardiology (DAVI)

Invalid Address (SAUS)

Inventory Adjustment (SAUS)

Inverter Assembly

Iodine Absorber (ABAC)

Ion Accelerator (SAUS)

Iowa - Postal code

Iowa Reports - A publication (DLA)

Iphigenia Aulidensis - of Euripides - Classical studies (OCD)

Iraqi Airways - ICAO designator

Iron Age

Irrespirable Atmosphere (SAUS)

Irrigation Area (ADA)

Irrigation Association (EA)

Isle Of Aran

Isolation Amplifier

Isophthalic Acid - Organic chemistry

Isotopic Analysis (SAUS)

Israel Atomic (SAUO)

Issuing Agency (AFM)

Issuing Authority (SAUS)

Italian Army (NATG)

Item-and-Arrangement - Linguistics (IEL)

Iteration Algorithm (SAUS)

Law Reports, Privy Council, Indian Appeals - India - A publication (DLA)

Millenia, Inc. - AMEX symbol (SAG)

Telegraph and Public Address - JETDS nomenclature