IRI

Short definition from Wiktionary

Proper noun

1. 1
   Initialism of Islamic Republic of Iran.
2. 2
   Initialism of Islamic Resistance in Iraq.

Noun

1. 1
   Initialism of Internationalized Resource Identifier A generalization of the Uniform Resource Locator (URL) allowing the use of Unicode.
2. 2
   Initialism of international roughness index A dimensionless quantity used for measuring road roughness, proposed as a world standard by the World Bank.
3. 3
   Initialism of Interpersonal Reactivity Index, used for the assessment of empathy.