Crossword Genius

As a result, there's an egression (7)

Ross

I believe the answer is:

outcome

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'there's an egression' is the definition.
(thesaurus)

I can't explain the remainder of the clue.

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(Other definitions for outcome that I've seen before include "Result or consequence" , "Eventuality" , "Denouement" , "Consequence, upshot" , "'Result, upshot (7)'" .)

I've seen this clue in the Evening Standard.
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