Crossword Genius

Pressure in stone that cracks (7)

Ross

I believe the answer is:

tension

'pressure' is the definition.
(pressure can mean tension or stress)

'in stone that cracks' is the wordplay.
'that cracks' is an anagram indicator (I've seen 'cracked' mean this).
'in'+'stone'='instone'
'instone' with letters rearranged gives 'TENSION'.

(Other definitions for tension that I've seen before include "Assay" , "Anxiety" , "Strained condition" , "Stretched state" , "State of strain or suspense" .)

I've seen this clue in The Sun.
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