A publication is the outcome (5)
I believe the answer is:
issue
I believe this is a double definition.
'a publication' is the first definition.
(issue is a kind of publication)
'the outcome' is the second definition.
(I've seen this before)
'is' is the link.
(Other definitions for issue that I've seen before include "Progeny of, send out" , "Question - outgoing - children" , "Number (of periodical)" , "Outcome - children" , "Outcome - discharge" .)