ISR

ISR is a three-letter abbreviation with multiple meanings, including:International Safety Research Inc. is a Canadian company specialized in radiation and nuclear safety management.Incremental Software Release is a way to update software computer programs periodically.Illegal Street Racing Motor racing against the law on public roads usually for prize money/reward.Institutional and Scientific Relations Directorate (European Union)Intelligence, Surveillance and Reconnaissance in a military context (See ISTAR)International Socialist Review U.S Socialist magazine.International Star RegistryInternational Search Report (in patent law)Interrupt Service Routine, a software routine that is executed in response to an interruptIn-Service Register or Interrupt Service Register. In computer science, a register used to indicate which interrupts are in progress.Information, Storage and RetrievalIntersecting Storage Rings, a particle collider at CERNInitial State Radiation, in particle physicsIsraelIsrairInternational Socialist Resistance Socialist Youth OrganisationInformation Systems Research, an academic journal in the information systems discipline.Incoherent scatter Radar, a ground-based technique for studying the ionosphere.In-Stent Restenosis, renewed blockage of a blood vessel after a stent has been implanted.Illinois Street Residence, the complex including Wardall and Townsend Halls, at the University of Illinois at Urbana-Champaign.Injection Site ReactionIntegrated Services Router
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International Search Report (Form PCT/ISA/210), produced by an International Searching Authority, is a report listing citations of published documents that might affect the patentability of the invention claimed in an international application.

Context: Patent 

An international search report (ISR) is established by the International Searching Authority. The ISR contains citations of documents considered to be relevant for the claimed invention (i.e. relevant prior art), the classification of the subject matter of the invention, and an indication of the fields searched as well as indications of any electronic data base searched.
  

Intelligence, Surveillance and Reconnaissance
  

INFORMATION STORAGE AND RETRIEVAL. INTERRUPT SERVICE ROUTINE. INTERRUPT STATUS REGISTER. ISR