Synonyms for Porous (same or very similar meaning)
WordNet sense 1 (allowing fluids or gases to pass or diffuse through):
permeable
WordNet sense 2 (allowing passage in and out):
holey
WordNet sense 3 (permitting the unwanted passage of fluids or gases ):
leaky
WordNet sense 4 (full of pores or vessels or holes):
poriferous
From the ODE community, based on WordNet
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