| Terms for subject Environment (24148 entries) |
| oceanography (The scientific study and exploration of the oceans and seas in all their aspects) | oceanografi | |
| odonate | odonata | |
| odor unit | lugtenhed | |
| odoriferous substance | duftstof | |
| odorogenic molecule | lugtstoffern molekyle | |
| odorous substance | lugtstof | |
| odorous substance | duftstof | |
| odour (The property of a substance affecting the sense of smell; any smell; scent; perfume) | lugt | |
| odour control on the production site | lugtgenebekæmpelse på produktionsstedet | |
| odour emission | lugtspredning | |
| odour limit | lugttærskel | |
| odour limit | lugtgrænse | |
| odour nuisance | lugtgene | |
| odour threshold | lugttærskel | |
| odour threshold | lugtgrænse | |
| OECD amber tier | OECD's gule niveau | |
| OECD classification list of wastes destined for recovery operations | OECD-klassifikationsliste over affald bestemt til nyttiggørelse | |
| OECD red tier | OECD's røde niveau | |
| OEF method | metode vedrørende organisationers miljøaftryk | |
| off site disposal | gendeponering |