Anaerobic

1. The absence of molecular oxygen.
2. Growing in the absence of molecular oxygen, such as anaerobic bacteria.
3. Occurring in the absence of oxygen, such as a biochemical process.

An*a`ë*rob"ic (&?;), a. (Biol.)

Relating to, or like, anaërobies; anaërobiotic.

© Webster 1913

An*a`ë*rob"ic (?), a. [Pref. an- not + aërobic.] (Biol.)

Not requiring air or oxygen for life; -- applied especially to those microbes to which free oxygen is unnecessary; anaërobiotic; -- opposed to aërobic.

© Webster 1913