sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Information Resource Officer | **** |
| Interim Receiving Order | **** |
| Individuele Reintegratie Overeenkomst | **** |
| Independent Research Organisations | **** |
| Internal Revenue Officer | **** |
| Independent Reviewing Officer | **** |
| Institutional Research Office | *** |
| International Rescue Organization | *** |
| International Robot Olympiad | *** |
| Irish Regions Office | *** |
| Information Referral Office | *** |
| Independent Review Organizations | *** |
| Inter Religious Organisation | *** |
| Internet Rights Observatory | *** |
| Interno Raseljene Osobe | *** |
| Integrated Regional Offices | *** |
| Intermediate Range Order | *** |
| Independent Review Officers | *** |
| Industrial Research Office | *** |
| International Race Officer | *** |
| International Refugee Organisation | *** |
| International Relations Organization | *** |
| Investor Relations Officers | *** |
| Inland Revenue Office | *** |
| Inspectie Ruimtelijke Ordening | *** |
| Inter Religious Organization | ** |
| implant-related osteomyelitis | ** |
| Independent Review Official | ** |
| informal reality orientation | ** |
| Industrie Riunite Odolesi | ** |
| Iowa Robotic Observatory | ** |
| implant-retained mandibular overdenture | ** |
| investor relation officer | ** |
| International Rescuedog Organisation | ** |
| Independent Retailers Organisation | ** |
| Industrial Research Organisation | ** |
| Industrial Removal Office | ** |
| Institute Review Office | ** |
| Internal Revolutionary Organization | ** |
| Independent Reviewing Official | ** |
| Industry Relation Officer | ** |
| ilocos regional office | ** |
| International Refugees Organisation | ** |
| Industrial Relations Officers | ** |
| Inter Regional Office | ** |
| Ignatius to the Romans | ** |
| Independent Risk Oversight | ** |
| Institute of Research in Ophthalmology | ** |
| International Recruitments Officer | * |
| International Research Office | * |
| Institutional Review Office | * |
| Industry Revenue Opportunity | * |
| Interinstitutional Recruitment Office | * |
| International Rettungshunde Organisation | * |
| Intermediary Resident Organizations | * |
| Internal Relief Organization | * |
| International Relation Officers | * |
| icelandic registration office | * |
| Integrative Recombinant Oligonucleotides | * |
| Inter Range Operations | * |
| ice rafted ostracodes | * |
| Industry Relations Operations | * |
| Instructional Resources Office | * |
| Integrated Regional Office | * |
| Islamic Relief Organizations | * |
| Independent Relations Officer | * |
| Illinois Resources Office | * |
| Illinois Resources Old | * |
| Industrial Research Organistion | * |
| Informal Review of an Ownership | * |
| Information Referral Obstetric | * |
| Information Resource for Outdoor | * |
| Initial Review Officers | * |
| Interactive Rowse for Oppone | * |
| Intermediary Rresident Organizations | * |
| Internal Rules of Operation | * |
| International Rebuilders Online | * |
| Internet Resources for Outdoor | * |
| Islamic Revolutionary Organization | * |
| Istituto Ricerca Onde | * |
| US Army Inventory Research Office | * |