Permeable
From Biology-Online Dictionary | Biology-Online Dictionary
Definition
adjective
Capable of being permeated or passed through, used especially of substances where fluids can penetrate or pass through.
Supplement
For example, wood is permeable to oil.
Word origin: LL permeābilis, equiv. to permeā(re) to permeate
Related forms: permeability (noun).
Compare: impermeable