Theme or point in consideration initially (5)
I believe the answer is:
topic
'theme' is the definition.
('topic' can be a synonym of 'theme')
'point in consideration initially' is the wordplay.
'point' becomes 'top' (top is a kind of point**).
'initially' indicates taking the first letters.
The initial letters of 'in consideration' is 'ic'.
'top'+'ic'='TOPIC'
'or' acts as a link.
(Other definitions for topic that I've seen before include "Subject (for conversation, etc)" , "Subject (of a talk, etc)" , "A subject for conversation or debate" , "Something to discuss" , "Question" .)