Be round in time for discussion (6)
I believe the answer is:
debate
'discussion' is the definition.
(debate is a kind of discussion)
'be round in time' is the wordplay.
'round' indicates anagramming the letters.
'in' means one lot of letters goes inside another.
'time' becomes 'date' (a date is a period of time).
'be' with letters rearranged gives 'eb'.
'eb' inserted into 'date' is 'DEBATE'.
'for' acts as a link.
(Other definitions for debate that I've seen before include "Verbal disputation" , "Ponder" , "Public discussion, perhaps a contest" , "Exchange of views" , "Discuss with opposing arguments" .)