Record of performance in unusual location regarding essential study? (11)
I believe the answer is:
ontological
'record of performance in unusual location' is the definition.
Although both the answer and definition are adjectives, I can't understand how they can define each other.
'regarding essential study?' is the wordplay.
I cannot quite see how this works, but
'regarding' could be 'on' (on or regarding a particular topic) and 'on' is found within the answer.
'study?' could be 'logic' (logic is a kind of study) and 'logic' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ontological that I've seen before include "metaphysical" , "Like argument for God" .)