What does IRS stand for?

Infrared Suppressor

This definition appears very rarely and is found in the following Acronym Finder categories:

Information technology (IT) and computers
Science, medicine, engineering, etc.

Other Resources:

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Inertial Reference System Inferno Reckless Summonn (Yu-Gi-Oh) Informal Resolution System Information Receiving Station Information Referral Services (Ontario, Canada) Information Reporting System Information Retrieval System Infrared Locking System (automobiles) Infrared Soldering Infrared Spectrograph		Infrastructure Requirements Specification Inherited Runners Scored (baseball; runner on base who scores after a new pitcher enters) Inland Refugee Society (Vancouver, British Columbia, Canada) Input Record Seperator (Perl programming language) Installation Readiness System Institute for Reactor Safety, Germany (now Gesellschaft für Anlagen- und Reaktorsicherheit mbH) Institute of Railway Signal Engineers (UK) Institute of Regional Studies (Pakistan government) Insulin Receptor Signaling Insulin Receptor Substrate

Samples in periodicals archive:

Communications and avionics equipment are also developed under HX-21's watchful eye, such as glass cockpits, electronic warfare technologies, infrared suppressors, integrated maintenance diagnostics, radar systems, electronic support measures, navigation and collision avoidance systems, and ground proximity warning systems.

Air Test and Evaluation Squadron 21

A CH-53E SLEP, additionally, could, for the first time, provide the Super Stallion with infrared suppressors and an integrated aircraft survivability suite.

Marine Corps mulling over options for heavy lift helos

Department of Defense to order up to 100 infrared suppressor shipsets (two per aircraft) to be fitted to Special Operations Command MH-47 Chinook helicopters.

BAE SYSTEMS Receives Award for Chinook Helicopter Safety Feature