Not using oxygen? Possibly be a con with air provided (9)
I believe the answer is:
anaerobic
'not using oxygen?' is the definition.
I can't tell whether this definition defines the answer.
'be a con with air provided' is the wordplay.
'with' says to put letters next to each other.
'provided' indicates an anagram (I've seen 'provides' mean this).
'be'+'a'+'con'+'air'='beaconair'
'beaconair' with letters rearranged gives 'ANAEROBIC'.
'possibly' acts as a link.
Can you help me to learn more?
(Other definitions for anaerobic that I've seen before include "lacking in inspiration?" , "functional without O2" .)