Acronyms & Abbreviations

The definition of IRS is:

IATA code for Kirsch Municipal Airport, Sturgis, Michigan, United States

Icfai Republic School

Identical, Related and Similar

Illinois Radiological Society

Imidazoline receptors

Immune rabbit serum

Immune rat serum

Immune reconstitution syndrome

Immunoreactive Score

Immunoreactive secretin

Immunoreactive somatostatin

Immunoreactivities

Immunoreactivity score

Implementing Rules

In-Structure Response Spectrum

Incidence rates

Incident reporting scheme

Independant Rear Suspension

INDEPENDENT REAR SUSPENSION

Independent Research Service

Independent Review Service

India Remote Sensing

Indian Readership Survey

Indian Reconnaissance Satellite

Indian Register of Shipping

Indian Registration System

Indian Registry System

Indian Remote Satellite

Indian Remote Sensing

Indian Remote Sensing Satellite

Indian Remote Sensing System

Indoor residual house-spraying

Indoor residual spraying

Industrial Robot System

Inertial Reference System

Inertial Reference Systems

Infared suppressor

Infinitely Rigid System

Inflammatory response system

Information Receiving Station

Information Record Separator

Information Reporting System

Information Requirements

Information Requirements Specification

Information Requirements Study

Information Retrieval Service

Information Retrieval System

Infra Red Signature

Infrared Reflectance Spectroscopy

Infrared Signature

Infrared spectra

Infrared spectroscopy

Inherited Runners who Scored

Inhibitory receptor superfamily

Initial receive sequence

Initial Receive Sequence Number

Inland Revenue Service

Inner root sheath

Inquiry and Reporting Service

Inquiry and Reporting System

Installation Readiness System

Instantaneous response spectra

Institut für ganzheitliche Rehabilitation und Spor

Institute of Regional Studies

Institutional representatives

Instructor Rating System

Instrument removal system

Insulated Return System

Insulin receptor species

Insulin receptor substrate

Insulin receptor substrates

Insulin receptors

Insulin resistance syndrome

Insulin resistant syndrome

Insulin response sequence

Insulin-related substrate

Integrated Radiator System

Integrated recovery scheduling

Integrated reporting system

Integrated Resource and Schedule

Integrated Resources

Intelligence Requirements

Intelligence Requirements Subcommittee

Intelligence Research Specialist

Intelligent Refining System

Intelligent Responsible Students

Interagency Reports

Interchange Record Separator

Interdepartmental Requisitions

Interest Rate Swap

Interface Requirement Specification

Interface Requirements Specification

Interface Requirements Specifications

Interface Rqmts Specification

Interferon response sequence

Interferon-responsive sequence

Intergenic regions

Intergovernmental Relations Staff

Intergroup Rhabdomyosarcoma Studies

Intergroup Rhabdomyosarcoma Study

Intergroup Rhabdomyosarcoma Study Committee

Interim recovery system

Intermedia Ranking Staff

Intermediate Reference System

Intermediate Results

Internal recognition subsequence

Internal Reflectance Spectroscopy

Internal Reflection Spectroscopy

Internal resolution site

Internal Revenue Service

Internal Revenue Service's

Internal Revenue Services

International Reconciliation System

International Reference Star

International Referral System

International Referral Systems

International Register of Shipping

International Repeater Station

International Retail Service

International Rhinologic Society

Interspersed repetitive sequence

Interspersed repetitive sequences

Interventional radiologists

Invasive Reperfusion Study

Inverse Raman scattering

Inverse Raman Spectroscopy

Inverted repeat sequence

Inverted repeats

Investment Removal Salt

Investor Relations Society

Ionizing radiation sensitivity

IR substrate

Iridium Monosulfide

Irrigation Research Station

IRSA Inversiones Y Representaciones S.A.

Isoleucyl-tRNA synthetase

Isotope ratios

Isotope Removal Service

Isotope Removal System

Item Reduction Studies

Item Reduction Study

ITS Radio System