| Subject | English | Italian |
| environ. | diffuse pollution Pollution from widespread activities with no one discrete source, e.g. acid rain, pesticides, urban run-off etc. | inquinamento diffuso |
| environ. | diffuse pollution | inquinamento diffuso |
| environ. | diffuse pollution source | fonte diffusa di inquinamento |
| environ. | diffuse pollution source | fonte diffusa d'inquinamento |