Made longer; prolonged (8)
I believe the answer is:
extended
I believe this clue is a double definition.
'made longer' is the first definition.
(extending is a kind of making longer)
'prolonged' is the second definition.
(I know that prolonged can be written as extended)
(Other definitions for extended that I've seen before include "Reached out for next deed" , "Widened" , "Prolonged, lengthened" , "Long" , "Elongated, expanded" .)