A solution containing a higher concentration of dissolved substances than the cell is termed hypertonic.

Here's why:

* Hyper means "above" or "excessive."

* Tonic refers to the osmotic pressure of a solution.

So, a hypertonic solution has a higher osmotic pressure than the cell, meaning it has a greater tendency to draw water out of the cell. This can lead to the cell shrinking or shriveling as water moves out to balance the concentration difference.