Pedant's conclusion is seen in odd statement of the obvious (6)
I believe the answer is:
truism
'statement of the obvious' is the definition.
(I've seen this before)
'pedant's conclusion is seen in odd' is the wordplay.
'conclusion' suggests the final letters.
'seen in' means one lot of letters goes inside another.
'odd' becomes 'rum' (I've seen this before).
The last letter of 'pedant' is 't'.
'is' put into 'rum' is 'ruism'.
't'+'ruism'='TRUISM'
(Other definitions for truism that I've seen before include "An obviously accurate statement" , "Self-evident saying" , "Unoriginal and obviously correct statement" , "Something obvious" , "Obvious statement that says nothing new or interesting" .)