In circulation, Financial Times, Time and Post (5)

I believe the answer is:

after

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'post' is the definition.
(the prefix 'post-' means 'after')

I don't understand how the remainder of the clue works.

(Other definitions for after that I've seen before include "In pursuit of, behind" , "At a later time or behind" , "Behind; in quest of" , "Subsequently" , "since" .)

I've seen this clue in The Telegraph.

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