sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Injury Road Traffic Accident | *** |
| Illinois Retired Teacher Association | *** |
| Irish Racehorse Trainers Association | *** |
| Intramural Research Training Awards | *** |
| Immigration Reform Transition Act | *** |
| Irish Real Tennis Association | ** |
| incomplete renal tubular acidiosis | ** |
| incomplete renal tubular acidosis | ** |
| International Refrigerated Transportation Association | ** |
| Independent Research Training Award | ** |
| International Race Teams Association | ** |
| Institutional Research Training Award | ** |
| Independent Retail Travel Agents | ** |
| Industry Response to AIDS | ** |
| International Refrigerated Transport Association | ** |
| Indo Russian Transport Aircraft | ** |
| Intramural Research Training Assistantship | ** |
| Intramural Research Training Awardees | * |
| Indiana Radiation Therapy Association | * |
| International Reciprocal Trading Association | * |
| Inverted Race Tube Assay | * |
| Individual Research Training Awards | * |
| Illinois Rural Telehealth Alliance | * |
| International Rail Training Association | * |
| International Reciprical Trade Association | * |
| Institute for Research in Tropical Agriculture | * |
| Intramural Research Trainees Assembly | * |
| Intramural Research Training Agreement | * |