Sponsorship (5)
'sponsorship' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for aegis that I've seen before include "Protection - patronage" , "strong defence" , "Protection (of someone)" , "Friendly endorsement and guidance" , "Auspices" .)
'sponsorship' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for patronage that I've seen before include "Condescension" , "Sponsorship - condescending manner" , "Regular custom" , "financial backing" , "The power to control privileges" .)