| This does not happen, however, because the cell membrane itself is impermeable to ions like sodium and potassium. |
| The coastline seemed impermeable, but finally, through bravery and daring, the explorer found his way in, and the treasure was revealed. |
| The channel is impermeable to anions but is permeable to a diverse group of cations. |
| Reverse osmosis is a process for desalting water that uses membranes that are permeable to water but essentially impermeable to salt. |
| They must be dismantled on an impermeable surface to avoid contaminating the ground. |
| A permeable seed imbibes water readily when available, while an impermeable one does not take up water for days or longer. |
