The meaning of the Acronym ISR is...

ISR is

• Interrupt Service Routine

More Meanings For ISR:

• In-Situ Rinse
• Ice Sheet Reconstruction
• Initial State Radiation
• Institute for Sensory Research
• Invoice Summary Register
• Interrupt Service Routine
• Interrupt Segment Register
• Interrupt Space Register
• Interrupt Service Routine
• Information Storage and Retrieval
• Intermediate Session Routing
• Integrated Switch Router
• Incremental Software Release
• Individual Safety Report
• Installation Status Report

ISR is also in:

• Assembly
• Drivers
• Electronics
• FDA
• General
• Meteorology
• Military
• Networking
• Physics
• Software
• Universities