The slow escape of a liquid or gas (7)
I believe the answer is:
seepage
(Other definitions for seepage that I've seen before include "Slow flow of fluid" , "Slow leaking flow" , "Percolation" , "Loss from slow leak" , "Slow fluid loss" .)
I believe the answer is:
seepage
(Other definitions for seepage that I've seen before include "Slow flow of fluid" , "Slow leaking flow" , "Percolation" , "Loss from slow leak" , "Slow fluid loss" .)