| Subject | English | Catalan |
| environ. | diffuse pollution Pollution from widespread activities with no one discrete source, e.g. acid rain, pesticides, urban run-off etc. | contaminació difusa |
| math. | diffuse prior | prior vaga |
| math. | diffuse prior | prior difusa |
| environ. | diffuse source Pollution which arises from various activities with no discrete source | font difusa |