Part of Punjab’s Patiala concerning space (7)
I believe the answer is:
spatial
'space' is the definition.
(thesaurus)
'part of punjab's patiala concerning' is the wordplay.
'part of' indicates a hidden word.
'SPATIAL' is hidden in the letters of 'punjabs patiala concerning'.
(Other definitions for spatial that I've seen before include "in 3-D" , "As plait (anag.)" , "A spital (anag)" , "Relating to space" , "Relating to area" .)