ISI

ISI (uncountable)

1. (telecommunications) Abbreviation of intersymbol interference.
2. (hematology) Initialism of international sensitivity index.

   Coordinate term: INR

3. (economics) Initialism of import substitution industrialization.
   • 1992, Edwin Williamson, The Penguin History of Latin America, London; New York: Penguin Books, →ISBN, page 336:

     Since ISI had been embraced by military juntas and urban interest-groups as an alternative to the oligarchic export-economy, government planners discriminated against exports by imposing heavy duties and pouring resources into manufacturing industry in preference to agriculture.

ISI

1. (Pakistan) Initialism of Inter-Services Intelligence.
2. Initialism of Islamic State in Iraq.
3. (US politics) Initialism of Intercollegiate Studies Institute, a conservative educational organization.
   • 2025 November 20, J. Oliver Conroy, “White nationalist Nick Fuentes is exposing a civil war among US Republicans: ‘We look like clowns’”, in The Guardian‎^[1], →ISSN:

     The turmoil has engulfed more and more of the right. Earlier this month, two board members of the Intercollegiate Studies Institute (ISI), another influential conservative group, resigned […] .

• IIs, Iis, IIS

• IPA^(key): /ˈi.si/, [ˈi.si]
• Homophone: isi

ISI (plural ISI-ISI)

1. (education) acronym of institut seni Indonesia (“Indonesian Institute of Arts”)

• “ISI”, in Kamus Besar Bahasa Indonesia [Great Dictionary of the Indonesian Language] (in Indonesian), Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016