| Subject | English | Finnish |
| med. | alveolar oxygen tension | alveolaarinen happiosapaine |
| med. | arterial oxygen saturation | valtimoveren happikyllästeisyys |
| med. | arterial oxygen tension | valtimoveren happiosapaine |
| transp., mater.sc. | automatic oxygen cutting | automaattinen polttoleikkaus |
| transp., avia. | automatically deployable oxygen equipment | automaattisesti esille tulevat happilaitteet |
| met. | basic oxygen furnace gas | konverttikaasu |
| met. | basic oxygen steel | happipuhallusteräs |
| environ. | biochemical oxygen demand The amount of oxygen used for biochemical oxidation by a unit volume of water at a given temperature and for a given time. BOD is an index of the degree of organic pollution in water | biokemiallinen hapentarve |
| nat.sc., environ., chem. | biochemical oxygen demand | biokemiallinen hapentarve |
| nat.sc., environ., chem. | biochemical oxygen demand | biokemiallinen hapenkulutus |
| nat.sc., environ., chem. | biological oxygen demand | biokemiallinen hapenkulutus |
| nat.sc., environ., chem. | biological oxygen demand | biokemiallinen hapentarve |
| environ., chem. | chemical oxygen demand | kemiallinen hapenkulutus |
| environ. | chemical oxygen demand The quantity of oxygen used in biological and non-biological oxidation of materials in water; a measure of water quality | kemiallinen hapentarve |
| environ., chem. | chemical oxygen demand | kemiallinen hapentarve |
| environ., chem. | chemical oxygen demand | COD |
| lab.law., transp. | closed circuit oxygen equipment | suljettukiertoinen happilaitteisto |
| chem. | compressed oxygen | puristettu happi |
| lab.law., transp. | constant flow oxygen equipment | jatkuvavirtauksinen happilaitteisto |
| lab.law., transp. | continuous flow oxygen equipment | jatkuvavirtauksinen happilaitteisto |
| med. | continuous flow oxygen system | kestovirtaushappijärjestelmä |
| met. | cutting oxygen nozzle | sisäsuutin |
| met. | cutting oxygen nozzle | leikkaussuutin |
| met. | cutting oxygen nozzle bore | leikkaushappikanava |
| met. | cutting oxygen pressure | leikkaushapen paine |
| met. | cutting oxygen tube | leikkaushappiputki |
| met. | cutting oxygen valve | leikkaushappiventtiili |
| med. | demand oxygen equipment | hengitysohjauksinen happilaite |
| med. | demand oxygen regulator | hengitysohjain |
| transp. | demand oxygen system | hengitysohjauksinen happijärjestelmä |
| chem. | diatomic oxygen | happi |
| 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 | liuonnut happi |
| environ., chem. | dissolved oxygen | liuennut happi |
| environ., tech. | dissolved-oxygen analyser | liuenneen hapen mittari |
| environ., chem. | dissolved oxygen concentration | liuennut happi |
| environ., tech. | dissolved-oxygen monitoring equipment | liuenneen hapen mittari |
| environ., chem. | dissolved-oxygen sag curve | happipitoisuuskäyrä |
| environ., chem. | dissolved-oxygen sag curve | happipitoisuuden muutoskäyrä |
| environ., chem. | dissolved-oxygen sag curve | hapenkulutuskäyrä |
| environ., chem. | dissolved oxygen saturation rate | liuenneen hapen kyllästysaste |
| chem. | dry oxygen | kuiva happi |
| environ. | dust removal in the oxygen-blown converters | happiteräskonvertterin pölynerotin |
| environ. | dust removal in the oxygen-blown converters | happipuhalluskonvertterin pölynerotin |
| met., el. | electrode for cutting without oxygen | sulatusleikkauspuikko |
| met., el. | electrode for cutting without oxygen | sulatusleikkauselektrodi |
| transp. | emergency oxygen | hätähappi |
| transp. | emergency oxygen bottle | hätähappipullo |
| transp. | emergency oxygen system | varahappijärjestelmä |
| transp. | emergency oxygen system | hätähappijärjestelmä |
| transp., avia. | first aid oxygen | ensiapuhappi |
| met. | fixed oxygen cutting machine | kiinteä polttoleikkauskone |
| med. | fractional concentration of expired oxygen, FEO 2 | uloshengitysilman happiosuus |
| med. | fractional concentration of inspired oxygen, fraction of O 2 in inspired gas | sisäänhengitysilman happiosuus |
| chem. | gaseous oxygen | kaasumainen happi |
| met. | heating oxygen pressure | kuumennushapen paine |
| met. | heating oxygen valve | kuumennushappiventtiili |
| transp. | high-pressure oxygen system | korkeapainehappijärjestelmä |
| health. | histotoxic oxygen deficiency | histotoksinen hypoksia |
| met., el. | hydrogen-oxygen furnace | vety-happiuuni |
| environ. | lack of oxygen | hapen puute |
| earth.sc., met. | laser oxygen-assisted cutting | laserpolttoleikkaaminen |
| industr. | limiting oxygen index | happi-indeksi |
| chem. | liquid oxygen | nestemäinen happi |
| transp. | low-pressure oxygen system | matalapainehappijärjestelmä |
| med. | maximum capacity of hemoglobin for binding oxygen | hemoglobiinin maksimaalinen hapensitomiskyky |
| chem. | molecular oxygen | molekyläärinen happi |
| chem. | oxirane oxygen | oksiraanihappo |
| met., el. | oxyarc cutting electrode with a central oxygen hole | happikaarileikkauspuikko |
| met., el. | oxyarc cutting electrode with a central oxygen hole | happikaarileikkauselektrodi |
| el. | oxygen absorption coefficient | happiabsorptiokerroin |
| el. | oxygen absorption lines | happiabsorptioviivat |
| met. | oxygen arc cutting | kaaripolttoleikkaus |
| met., el. | oxygen arc cutting electrode | polttoleikkauspuikko |
| met., el. | oxygen arc cutting electrode | happikaari-leikkauspuikko |
| met., el. | oxygen arc cutting electrode with central oxygen hole | putkimainen polttoleikkauspuikko |
| met. | oxygen-arc derivetting | niittien poisto kaaripolttoleikkauksella |
| met., el. | oxygen arc electrode holder | polttoleikkauspuikon pidin |
| pharma., chem. | oxygen aromatic compound | aromaattinen happiyhdiste |
| environ., chem. | oxygen balance | happitasapaino |
| life.sc. | oxygen balance in water | veden happitasapaino |
| met., el. | oxygen blow | hapen puhallus |
| met. | oxygen-blown converter | happiteräskonvertteri |
| met. | oxygen-blown converter | happipuhalluskonvertteri |
| met. | oxygen-blown steel | happipuhallusteräs |
| industr., construct., chem. | oxygen boosting | happirikastus |
| industr., construct., chem. | oxygen boosting | happiahto |
| med. | oxygen bottle | happipullo |
| chem. | oxygen compound | oksygenaatti |
| met. | oxygen connection | happiletkun liitin |
| med. | oxygen consumption | hapenkulutus |
| med. | oxygen consumption | hapenotto |
| energ.ind., industr., chem. | oxygen-containing hydrocarbon | happea sisältävä hiilivety |
| environ. | oxygen content | happipitoisuus |
| environ. | oxygen content Amount of oxygen contained in a solution | happipitoisuus |
| transp. | oxygen converter | hapenkehitin |
| met. | oxygen cutting | polttoleikkaus |
| met. | oxygen cutting machine | polttoleikkauskone |
| met. | oxygen cutting with the assistance of a steel rod | polttoleikkaus lankaa käyttäen |
| med. | oxygen cylinder | happipullo |
| gen. | oxygen debt | hapenpuute |
| environ. | oxygen deficiency | hapenpuute |
| environ. | oxygen deficiency No definition needed | hapenpuute |
| life.sc. | oxygen deficit | happivaje |
| industr., construct. | oxygen delignification | ligniinin happipoisto |
| nat.sc., agric. | oxygen demand | hapen tarve |
| environ. | oxygen depletion | happikato |
| el. | oxygen dipole | happidipoli |
| transp., avia. | oxygen dispensing unit | hapenantolaite |
| med. | oxygen ear | happikorva |
| met. | oxygen embrittlement | hapen aiheuttama hauraus |
| industr., construct., chem. | oxygen enrichment | happiahto |
| industr., construct., chem. | oxygen enrichment | happirikastus |
| transp., avia. | oxygen equipment | happilaitteet |
| transp., avia. | oxygen equipment and supply requirements | happilaitteita ja hapen määrää koskevat vaatimukset |
| met. | oxygen flow rate | hapen virtausmäärä |
| agric., el. | oxygen gasification | happikaasutus |
| lab.law. | oxygen-generating self-contained breathing apparatus | happilaite |
| med. | oxygen-hemoglobin dissociation curve | hemoglobiinin happidissosiaatiokäyrä |
| chem. | oxygen hereto-atom | happiheteroatomi |
| pharma., chem. | oxygen heterocyclic compound | heterosyklinen happiyhdiste |
| industr. | oxygen index | happi-indeksi |
| met. | oxygen lancing | polttopeitsaus |
| lab.law., transp. | oxygen mask | happinaamari |
| mater.sc. | oxygen mask | hapenantolaite |
| mech.eng. | oxygen mask hose | happinaamarin letku |
| transp., avia., tech. | oxygen meter | happimittari |
| transp. | oxygen microphone | happinaamarin mikrofoni |
| med. | oxygen paradox | happivajausparadoksi |
| mater.sc., mech.eng. | oxygen permeability | hapenläpäisevyys |
| met. | oxygen piercing | polttopeitsaus |
| met. | oxygen pressure | hapen paine |
| med. | oxygen pressure demand regulator | hengitysohjain |
| transp. | oxygen pressure demand system | hengitysohjauksinen happijärjestelmä |
| transp., mil., grnd.forc., environ. | oxygen probe | happianturi |
| transp., mil., grnd.forc., environ. | oxygen probe | happitunnistin |
| agric., mater.sc. | oxygen pull-down | hapen vähentäminen |
| el. | oxygen recombination | hapen rekombinaatio |
| met. | oxygen refined steel | happipuhallusteräs |
| environ., chem. | oxygen-sag curve | hapenkulutuskäyrä |
| environ., chem. | oxygen-sag curve | happipitoisuuden muutoskäyrä |
| environ., chem. | oxygen-sag curve | happipitoisuuskäyrä |
| med. | oxygen saturation of hemoglobin | valtimoveren happikyllästeisyys |
| life.sc. | oxygen saturation value | hapen kyllästysarvo |
| environ. | oxygen sensor | happitunnistin |
| transp. | oxygen sensor | happianturi |
| gen. | oxygen sensor | lambda-anturi |
| met. | oxygen steel | happipuhallusteräs |
| met. | oxygen steel furnace gas | konverttikaasu |
| environ. | oxygen supply | hapetus |
| environ. | oxygen supply | happilisäys |
| transp., avia. | oxygen supply | hapen määrä |
| transp., polit. | oxygen supply for emergency use | varahappi |
| transp., avia. | oxygen supply requirements | happimäärävaati-mukset |
| transp., avia. | oxygen supply terminal | hapenjakelupiste |
| lab.law., transp. | oxygen system | happijärjestelmä |
| health. | oxygen therapy | happihoito |
| med. | oxygen uptake | hapenkulutus |
| med. | oxygen uptake | hapenottokyky |
| med. | oxygen uptake | hapenotto |
| transp. | passenger oxygen | matkustamon happi |
| met. | plasma oxygen cutting | plasmapolttoleikkaus |
| met. | portable oxygen cutting machine | kannettava polttoleikkauskone |
| med. | portable oxygen cylinder assembly | kannettava happipullo |
| med. | portable oxygen cylinder assy | kannettava happipullo |
| transp., avia. | portable oxygen unit | kannettava happilaite |
| met. | preheating oxygen pressure | kuumennushapen paine |
| met. | preheating oxygen valve | kuumennushappiventtiili |
| met. | purity of cutting oxygen | leikkaushapen puhtaus |
| lab.law. | self-contained closed-circuit oxygen breathing apparatus, compressed oxygen type | happilaite |
| lab.law. | self-contained closed-circuit oxygen breathing apparatus, liquid oxygen type | happilaite |
| lab.law. | self-contained closed-circuit oxygen breathing apparatus, oxygen generating type | happilaite |
| environ. | separating plants in the oxygen-blown converters | happipuhalluskonvertterin pölynerotin |
| environ. | separating plants in the oxygen-blown converters | happiteräskonvertterin pölynerotin |
| el. | separation by implementation of oxygen | erottaminen oksidoimalla |
| transp., avia. | supplemental oxygen | varahappi |
| environ. | theoretical oxygen demand | teoreettinen hapenkulutus |
| med. | transcutaneous monitoring of oxygen | hapen osapaineen transkutaaninen mittaus |
| med. | transcutaneous monitoring of oxygen | hapen osapaineen mittaaminen ihon läpi |
| met. | transportable oxygen cutting machine | siirreltävä polttoleikkauskone |
| agric., mech.eng. | tube for oxygen distribution | hapensumutin |
| agric., mech.eng. | tube for oxygen distribution | hapenjohdin |
| met., el. | tubular oxygen arc cutting electrode | putkimainen polttoleikkauspuikko |
| met. | underwater oxygen cutting | vedenalainen polttoleikkaus |
| chem. | wet oxygen | kostea happi |
| environ., chem. | zirconium oxide oxygen sensor | zirkonilevyanturi happipitoisuuden määrittämiseen |