ANAEROBIC

adj. active, occurring without free oxygen (Chemistry)

Anaerobic is a technical word which literally means without air (where "air" is generally used to mean oxygen), as opposed to aerobic. In wastewater treatment the absence of oxygen is indicated as anoxic; and anaerobic is used to indicate the absence of any electron acceptor (nitrate, sulfate or oxygen). An anaerobic adhesive is a bonding agent that does not cure in the presence of air.
See more at Wikipedia.org...

Adjective
1. living or active in the absence of free oxygen; "anaerobic bacteria"
(synonym) anaerobiotic
(antonym) aerobic, aerophilic, aerophilous
2. not aerobic; "isometric exercises are anaerobic"
(antonym) aerobic

(a.)
Relating to, or like, anaerobies; anaerobiotic.
  

noun
biochemical processes which lead to the formation of ATP without oxygen