oxygen
Air's vital component
Oxygen is the chemical element essential for most life on Earth—the gas we breathe and the component of air that sustains combustion.
Water is hydrogen and oxygen combined.
In medical contexts, oxygen refers to supplemental breathing support: The patient was put on oxygen.
Figuratively, oxygen is anything vital to survival or continuation: Publicity is oxygen for a political campaign.
Gaseous envelope surrounding Earth
- ozoneTriatomic oxygen allotrope
- troposphereLowest atmospheric layer
- stratosphereSecond atmospheric layer up
- atmosphereGaseous layer around planets
altitude · barometric · argon · photosynthesis · respirable · breathable · sea-level · pressurization
Of elemental particles
- moleculeBonded atomic group
- O2Molecular oxygen gas
- diatomicHaving two atoms
- isotopeElemental variant by mass
valence · electron · covalent · bond · reactive · ozone · chemical · Lavoisier
Pulmonary gas exchange
- inhalationTaking breath in
- exhalationBreathing out air
- lungsRespiratory chest organs
- alveoliLung's gas-exchange chambers
bronchi · diaphragm · trachea · bronchioles · surfactant · asthma · pneumonia · pulmonology
Burning gas made visible
- fireCombustion with flames
- burnDamage by heat
- ignitionStarting combustion process
- fuelEnergy source material
heat · reaction · explosion · spark · blaze · kindling · combustible · flashpoint
Animate state
- survivalRemaining alive against odds
- essentialFundamentally necessary
- aerobicRequiring free oxygen
- metabolismCellular nutrient conversion
organism · cellular · biological · sustenance · existence · lifeblood · life-giving · vivifying
Heat-fusing metal pieces
- torchHandheld burning light source
- acetyleneFlammable welding fuel
- cuttingDividing via sharp edge
- brazingFiller-metal bonding process
steelmaking · smelting · cylinder · regulator · cryogenic · liquid · LOX · tank
Mechanical breathing apparatus
- intubationPlacing airway tube
- saturationState of complete permeation
- hypoxemiaLow blood oxygen levels
- supplementalAdded to complete
therapy · hyperbaric · nebulizer · inhaler · anesthesia · resuscitator · life-support · cannula
air
Gaseous envelope surrounding Earth
- ozoneTriatomic oxygen allotrope
- troposphereLowest atmospheric layer
- stratosphereSecond atmospheric layer up
atmosphere · altitude · barometric · argon · photosynthesis · respirable · breathable · sea-level · pressurization · airliner
atomic
Of elemental particles
isotope · valence · electron · covalent · bond · reactive · ozone · chemical · Lavoisier · Priestley
breathing
Pulmonary gas exchange
- inhalationTaking breath in
- exhalationBreathing out air
- lungsRespiratory chest organs
alveoli · bronchi · diaphragm · trachea · bronchioles · surfactant · asthma · pneumonia · pulmonology · spirometry
flame
Burning gas made visible
fuel · heat · reaction · explosion · spark · blaze · kindling · combustible · flashpoint · smolder
life
Animate state
metabolism · organism · cellular · biological · sustenance · existence · lifeblood · life-giving · vivifying · indispensable
welding
Heat-fusing metal pieces
brazing · steelmaking · smelting · cylinder · regulator · cryogenic · liquid · LOX · tank · valve
ventilator
Mechanical breathing apparatus
- intubationPlacing airway tube
- saturationState of complete permeation
- hypoxemiaLow blood oxygen levels
supplemental · therapy · hyperbaric · nebulizer · inhaler · anesthesia · resuscitator · life-support · cannula · mask
- atmosphereair, humidity, atmosphere, temperature, ozone layer
- resourcesresources, money, natural resources, human resources, financial resources
- chemicalschemicals, compounds, acids, reagents, solutions
- Emergency MedicineEMT, emergency medicine, EMS, paramedic, paramedics
- gasesgas, air, helium, argon, chlorine
- hospitalhospital, admission, wards, ER, bed
oxygencarbon dioxide
Respiration byproduct, photosynthesis fuel
CO2 · carbon monoxide · asphyxiant · nitrogen · poison gas
oxygenreducing agent
Electron-donating chemical species
hydrogen · antioxidant · nitrogen · noble gases · argon
- oxygen tankPressurized breathing gas container
- oxygen maskFace-worn breathing apparatus
- oxygen debtPost-exercise recovery requirement
- oxygen levelConcentration of breathable gas
- pure oxygenElement eight, concentrated
- oxygen deprivationInsufficient breathable gas supply
oxygen-18, oxygen mask, oxygenate, oxygenation, oxygenated, oxygenator, oxygen tank, oxygenating, oxygenates