1. 
   IAR
   Instruction Address Register. The IBM name for program counter. (1995-03-21)
   Found op http://foldoc.org/IAR
   
   
2. 
   IAR
   acronym: Institute for Atmospheric Radioactivity (Feiberg, Germany)
   Found op http://cdiac.ornl.gov/pns/acronyms.html#I
   
   
3. 
   IAR
   abbreviation: intersection of air routes
   Found op http://www.apscharts.com/abbrev.html
   
   
4. 
   IAR
   Information Asset Register
   Found op http://www.met.police.uk/foi/glossary.htm
   
   
5. 
   iar
   1) Institute for atmospheric radioactivity
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/iar/1
   
   

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