Origin: Latin suffix -ous
Porous has 4 different meanings across 1 category:
able to absorb fluids
"the partly porous walls of our digestive system"
"compacting the soil to make it less porous"
full of pores or vessels or holes
"The old sponge was so porous that it absorbed a single drop of water instantly."
Full of tiny pores that allow fluids or gasses to pass through.
"The old sponge was so porous that it absorbed the spilled water in seconds."