anaerobic

Anaerobic means "without oxygen." Anaerobic bacteria, unlike humans, don't need oxygen to survive.

Aerobic means "needing or using oxygen." Think about aerobic activity, also called "cardio," like running, biking, or yes, taking an aerobics class at your local gym. That heart-pumping exercise makes your lungs take in more oxygen to keep you moving. Anaerobic is the opposite of aerobic. It means "without oxygen." Weight lifting is called an anaerobic exercise, because it doesn't require additional oxygen.

Definitions of anaerobic
1

adj not aerobic

“isometric exercises are anaerobic
Antonyms:
aerobic
based on or using the principles of aerobics; enhancing respiratory and circulatory efficiency

adj living or active in the absence of free oxygen

anaerobic bacteria”
Synonyms:
anaerobiotic
Antonyms:
aerobic, aerophilic, aerophilous
depending on free oxygen or air
aerobiotic
living or active only in the presence of oxygen
oxidative
taking place in the presence of oxygen
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