WordNet (r) 3.0 (2006):

ISI
    n 1: 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 [syn: Directorate for Inter-Services Intelligence,
         Inter-Services Intelligence, ISI]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ISI
       [Fraunhofer] Institut fuer Systemtechnik und Innovationsforschung
(org.)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ISI
       Information Sciences Institute (org., USA)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ISI
       Information Society Initiative (UK)