Figure United's in condition (6)
I believe the answer is:
statue
'figure' is the definition.
(statue is a kind of figure)
'united's in condition' is the wordplay.
'united' becomes 'u'.
'in' is an insertion indicator.
'condition' becomes 'state' (I've seen this before).
'u' going inside 'state' is 'STATUE'.
(Other definitions for statue that I've seen before include "Three-D human representation" , "Monument" , "Sculptured likeness" , "Model figure" , "Three-dimensional representation" .)