Found 2 items, similar to nonporous.
English → English (WordNet)
Definition: nonporous
nonporous
adj : not porous; especially not having vessels that appear as
pores; 
“nonporous wood” [ant: 
porous]
English → English (gcide)
Definition: nonporous
nonporous 
\nonporous\ adj.
Not porous; especially, not having vessels that appear as
pores; as, nonporous wood. Opposite of 
porous.
[WordNet 1.5]