Overflow dispatched nun to India (10)

I believe the answer is:

inundation

'overflow' is the definition.
(thesaurus)

'dispatched nun to india' is the wordplay.
'dispatched' is an anagram indicator (letters dispatched to new positions).
'nun'+'to'+'india'='nuntoindia'
'nuntoindia' is an anagram of 'INUNDATION'.

(Another definition for inundation that I've seen is " Flood".)

I've seen this clue in the Sydney Morning Herald.

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