In biochemistry, reactions that need oxygen to happen or happen when oxygen is present.
Aerobic microorganisms (aerobes) are those that require oxygen for growth; obligate aerobes cannot survive in the absence of oxygen. The opposite are anaerobic organisms, which do not require oxygen for growth; obligate anaerobes cannot survive in the presence of oxygen.
Aerobic exercise is physical activity that requires an increase in heart rate and respiration to meet the increased demand of muscle for oxygen, as contrasted with maximum exertion or sprinting, when muscle can metabolise anaerobically.
Means literally, with oxygen, or in the presence of oxygen.
In the presence of, requiring, or utilizing oxygen.
Conditions or processes that occur in the presence of, or requiring, oxygen.
Exposed to air or oxygen. An oxygenated environment.