Among some of the Byzantine, last icons are set in stone (9)
I believe the answer is:
inelastic
'set in stone' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I don't see?
'among some of the byzantine last icons' is the wordplay.
'INELASTIC' is hidden in amongst the letters.
But, I am not sure how the hidden word is indicated.
'are' is the link.
Can you help me to learn more?
(Other definitions for inelastic that I've seen before include "Not giving" , "Lacking spring" , "Broken" , "Firm, not springy" , "without resilience" .)