Less rapid fluid distribution (9)
I believe the answer is:
dispersal
'distribution' is the definition.
(disperse can mean to distribute)
'less rapid fluid' is the wordplay.
'fluid' indicates anagramming the letters.
'less'+'rapid'='lessrapid'
'lessrapid' with letters rearranged gives 'DISPERSAL'.
(Other definitions for dispersal that I've seen before include "broadcast" , "(Of smoke) thinning out and disappearance" , "Dissemination" , "Natural spread of seed" , "Scattering" .)