What does ISI stand for?

What does ISI mean?

ISI	International Super Intelligence Miscellaneous » Unclassified
ISI	Isi Stands For Insanely Miscellaneous » Unclassified
ISI	Initial System Installation Governmental » NASA
ISI	Instrumentation Support Instruction Governmental » NASA
ISI	Institutional Survivability Indicator Business » General
ISI	International Sports Images Business » Firms
ISI	Insomnia Severity Index Medical
ISI	Insomnia Screening Index Medical
ISI	Insomnia Screening Index Governmental » Military
ISI	International Sensitivity Index Medical » Laboratory

Directorate for Inter-Services Intelligence, Inter-Services Intelligence, ISI(noun): the Pakistan intelligence agency; a powerful and almost autonomous political and military force; has procured nuclear technology and delivery capabilities; has had strong ties with the Taliban and other militant Islamic groups