Spray in a looser distribution (7)
I believe the answer is:
aerosol
'spray' is the definition.
(as in an aerosol spray)
'a looser distribution' is the wordplay.
'distribution' indicates anagramming the letters.
'looser' is an anagram of 'erosol'.
'a'+'erosol'='AEROSOL'
'in' acts as a link.
(Other definitions for aerosol that I've seen before include "Atomiser" , "Spray creator" , "What makes mist" , "Air-spray" , "Container with device for releasing contents as fine spray" .)