Here's a breakdown of the terms:
* Hypertonic: A solution with a higher concentration of solutes than another solution.
* Hypotonic: A solution with a lower concentration of solutes than another solution.
* Isotonic: Two solutions with the same concentration of solutes.
These terms are often used when discussing osmosis, the movement of water across a semipermeable membrane from an area of high water concentration to an area of low water concentration.