| Subject | English | Latvian |
| environ. | diffuse pollution Pollution from widespread activities with no one discrete source, e.g. acid rain, pesticides, urban run-off etc. | difūzais piesārņojums |
| environ. | diffuse source Pollution which arises from various activities with no discrete source | dažādi piesārņojuma avoti |
| chem. | diffuse use | vielas difūzs lietojums |
| transp. | diffusing lens | izkliedētājs |
| transp. | diffusing lens | izkliedētājlēca |
| transp., tech., law | diffusing medium | difūzijas vide |