IR
[1] Internet Registry[2] Infra Red - Infrarot
[3] Index/Instruction Register
[4] Iterative Refinement - schrittweise Verfeinerung (von Problemen)
[5] Information Retrieval
[6] Instrument Reading
[7] Insulation Resistance
[8] Interrogator-Responder (->""IEEE" Standard Dictionary")
[9] Internetwork Router
[10] "ISO3166" 2LA ( = Ländercode bzw. TopLevelDomain) für Iran