| Subject | English | Slovene |
| life.sc. | abiotic oxygen uptake | abiotska poraba kisika |
| el. | atmospheric oxygen | kisik iz zraka |
| environ. | biochemical oxygen demand | biološka potreba po kisiku |
| nat.sc., environ., chem. | biochemical oxygen demand | biokemijska potreba po kisiku |
| nat.sc., environ., chem. | biological oxygen demand | biokemijska potreba po kisiku |
| life.sc. | chemical oxygen consumption | kemijska potreba po kisiku |
| environ., chem. | chemical oxygen demand | kemijska potreba po kisiku |
| environ. | chemical oxygen demand | kemična potreba po kisiku |
| environ., chem. | dissolved oxygen | raztopljeni kisik |
| environ. | dissolved oxygen The amount of oxygen dissolved in a stream, river or lake is an indication of the degree of health of the stream and its ability to support a balanced aquatic ecosystem. The oxygen comes from the atmosphere by solution and from photosynthesis of water plants. The maximum amount of oxygen that can be held in solution in a stream is termed the saturation concentration and, as it is a function of temperature, the greater the temperature, the less the saturation amount. The discharge of an organic waste to a stream imposes an oxygen demand on the stream. If there is an excessive amount of organic matter, the oxidation of waste by microorganisms will consume oxygen more rapidly than it can be replenished. When this happens, the dissolved oxygen is depleted and results in the death of the higher forms of life | raztopljeni kisik |
| environ., chem. | dissolved oxygen concentration | raztopljeni kisik |
| environ. | oxygen content Amount of oxygen contained in a solution | vsebnost kisika (Količina kisika v raztopini) |
| med. | oxygen content | vsebnost kisika |
| environ. | oxygen deficiency No definition needed | pomanjkanje kisika |
| life.sc. | oxygen electrode | kisikova elektroda |
| chem. | oxygen meter | oksimeter |
| gen. | oxygen sensor | lambda sonda |
| life.sc., chem. | theoretical oxygen demand | teoretična potreba po kisiku |