sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Radiation Health Unit | *** |
| Rohm and Haas UK | *** |
| Rural Health Units | *** |
| Reproductive Health Unit | *** |
| Registered Health Underwriters | *** |
| Radiological Health Unit | *** |
| recurrent herpetic ulceration | ** |
| relative hippuran uptake | ** |
| Resid Hydrotreater Unit | ** |
| anti-recombinant human | ** |
| Restricted Housing Unit | ** |
| Reinforcement Holding Unit | ** |
| Rodeo Horses Unlimited | ** |
| Royal Holloway University | ** |
| Radioisotope Heating Units | * |
| Remote Hub Units | * |
| Register Health Underwriter | * |
| Refrigerated Holding Unit | * |
| radioactive heater units | * |
| Relatively Homogeneous Units | * |
| Radio Heating Units | * |
| radioisotope header units | * |
| Replacement/Reinforcing Unit | * |