sort by Rank | Alpha
| Possible Meanings | Rank |
| Internation Union of Pure and Applied Chemistry | ** |
| Intl Union of Pure and Applied Chemistry | ** |
| International Union for Pure Applied Chemistry | ** |
| International Union of Practical and Applied Chemistry | * |
| Isolated Union of Pupil Accidently at College | * |
| International Union of Pure and Applied Chemicals | * |