Scarcely sufficient time after screening (5)
I believe the answer is:
scant
'scarcely sufficient' is the definition.
(I've seen this before)
'time after screening' is the wordplay.
'time' becomes 't' (abbreviation).
'after' is a charade indicator (letters next to each other).
'screening' becomes 'scan' (e.g. a medical scan).
't' after 'scan' is 'SCANT'.
(Other definitions for scant that I've seen before include "Reduce" , "Meagre" , "Barely sufficient" , "Scarcely sufficient" , "Cursory" .)