Anaerobe (noun)

A microorganism that can survive and grow in the absence of oxygen.

Origin:

From greek an- "without" + aer "air" + -obe "dweller".

Examples:

1. Anaerobic bacteria are found in the human gut, where they aid in digestion.
2. The anaerobe was able to survive in the sealed container because it did not require oxygen to survive.
3. Anaerobic respiration is a process used by some organisms to generate energy without the need for oxygen.
4. Anaerobic exercise, such as weightlifting, is a type of exercise that primarily works the muscles' anaerobic energy systems.
5. The anaerobe was able to survive in deep sea where no oxygen was present.