Turned to stone (9)
I believe the answer is:
petrified
'turned to stone' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for petrified that I've seen before include "scared stiff" , "Turned to stone - in extreme fear" , "Frightened" , "terror-stricken" , "Paralysed with fear" .)