oxygen-free
Lacking breathable gas
Oxygen-free describes an environment, substance, or container from which oxygen has been removed or excluded.
The term appears most often in technical contexts: oxygen-free copper is prized in electronics for its high conductivity, and oxygen-free packaging helps preserve food by preventing oxidation.
In chemistry and manufacturing, maintaining oxygen-free conditions is essential for reactions or processes that would be compromised by the presence of oxygen.
Not requiring oxygen
- fermentationMicrobial sugar conversion
- glycolysisGlucose metabolism producing ATP
- hypoxicInsufficient oxygen supply
- suffocationFatal lack of air
asphyxiation · respiration · metabolism · yeast · bacteria · decomposition · putrefaction · botulism
Not requiring oxygen
- inertInactive, physically or chemically
- deoxygenatedWithout oxygen present
- reducingMaking less or smaller
- vacuum-sealedEnclosed without air
degassed · anoxic · hermetic · purged · blanketed · glovebox · headspace · displacement
Sealed without air
- shelf-lifePeriod before spoilage
- preservationMaintaining something's condition
- spoilageFood degradation process
- freshnessState of being unspoiled
sealed · airtight · desiccant · deoxidizer · sachets · rancidity
Reddish-brown metallic element
- conductivityAbility to carry current
- brazingFiller-metal bonding process
- weldingHeat-fusing metal pieces
- electronicsStudy of circuits
audio · annealing · smelting · casting · furnace · sintering · refining · embrittlement
anaerobic
Not requiring oxygen
- fermentationMicrobial sugar conversion
- glycolysisGlucose metabolism producing ATP
- hypoxicInsufficient oxygen supply
suffocation · asphyxiation · respiration · metabolism · yeast · bacteria · decomposition · putrefaction · botulism · facultative
anaerobic
Not requiring oxygen
- inertInactive, physically or chemically
- deoxygenatedWithout oxygen present
- reducingMaking less or smaller
vacuum-sealed · degassed · anoxic · hermetic · purged · blanketed · glovebox · headspace · displacement · bubbling
vacuum-packed
Sealed without air
- shelf-lifePeriod before spoilage
- preservationMaintaining something's condition
- spoilageFood degradation process
freshness · sealed · airtight · desiccant · deoxidizer · sachets · rancidity
copper
Reddish-brown metallic element
- conductivityAbility to carry current
- brazingFiller-metal bonding process
- weldingHeat-fusing metal pieces
electronics · audio · annealing · smelting · casting · furnace · sintering · refining · embrittlement · porosity
oxygen-freeoxygenated
Infused with O2
oxygen-rich · aerobic · oxidizing · aerated · oxidative
oxygen-freebreathable
Permits air passage
respirable · habitable · ventilated · fresh air · atmospheric
oxygen, free, oxygenate, oxygenation, oxygenated, oxide, oxidize, oxidation, oxidant