Crossword Genius

Chance a noted clinic for reconstructive work (12)

Ross

I believe the answer is:

coincidental

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'chance' is the definition.
(as in a chance encounter)

'a noted clinic for reconstructive work' is the wordplay.
'a noted clinic' anagrams to 'COINCIDENTAL'.
Though, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for coincidental that I've seen before include "Happening at the same time" , "fortuitous" , "Occurring together" , "Happening together but without connection" , "Apparently randomly concurrent" .)

I've seen this clue in The Times.
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