IR

1. (international standards) ISO 3166-1 alpha-2 country code for Iran.

   Synonym: IRN (alpha-3)

IR (countable and uncountable, plural IRs)

1. (business) Initialism of industrial relations.
2. (business) Initialism of investor relations.
3. (computer science) Initialism of information retrieval.
4. (software compilation) Initialism of intermediate representation.
   • 2021, Kai Nacke, Learn LLVM 12: A beginner's guide to learning LLVM compiler tools and core libraries with C++, Packt Publishing Ltd, →ISBN, page viii:

     At the end of the chapter, you will have implemented your first compiler producing LLVM IR.

5. (physics) Abbreviation of infrared.
6. (physics) Initialism of infrared radiation.

   IR communication

   IR blaster

7. (aviation) Initialism of inertial reference.
8. (disability sport) Initialism of indoor rowing.
9. (politics) Initialism of international relations.
10. (law enforcement) Initialism of incident report.
11. (pharmacology) Initialism of immediate release.

    Antonym: XR

12. (Ohio, rare) Initialism of interstate route.

IR (not comparable)

1. (pornography) Initialism of interracial.

• R.I., RI, Ri, ri

• IPA^(key): [a̠i a̠ːɾɯ̟]

IR(アイアール) • (ai āru) 

1. short for 統合型リゾート (tōgōgata rizōto, “integrated resort”)

IR

1. (Christianity) initialism of Iesus Rex (“Jesus, the king”) short for INRI

• INRI