impermeable
1. [ adjective ] preventing especially liquids to pass or diffuse through
Examples:

"impermeable stone" "an impermeable layer of scum" "a coat impermeable to rain"

Related terms: permeable rubber water-repellent impervious tight
Similar spelling:   imperturbable
  imperviable
  imperishable
  impermissible
  impermeability
  imperial
  impermissibly
  imperially
  imipramine
  Imperial_beard
  impermanent
  imperative
  imperialist
  imperialism
  imperforate
  impermanence
  imperceptible
  Imperato
  impermanency
  imperialistic
  imperial_moth
  improper
  imperatively
  improperness