Given a life dependence requirement (3)
I believe the answer is:
fed
'given' is the definition.
('feed' can be a synonym of 'give')
'a life dependence requirement' is the wordplay.
'FED' is hidden within the letters.
However, I'm unsure how this is indicated.
Can you help me to learn more?
(Other definitions for fed that I've seen before include "Provided food for" , "Gave food to (someone)" , "Provided courses" , "Given food to eat" , "Nourished" .)