Ban thus encompassing business graduate (7)
I believe the answer is:
embargo
'ban' is the definition.
(I know that embargo is a more specific form of ban)
'thus encompassing business graduate' is the wordplay.
'thus' becomes 'ergo' (I've seen this before).
'encompassing' means one lot of letters goes inside another.
'business graduate' becomes 'MBA' (Master of Business Administration degree).
'ergo' placed around 'mba' is 'EMBARGO'.
(Other definitions for embargo that I've seen before include "Trading ban" , "Ban; prohibition" , "Boycott" , "Government order imposing a trade barrier" , "Ban on commerce - mob rage (anag)" .)