Isotonic (adjective)

1. Having the same concentration of dissolved particles as body fluids.
2. Having the same osmotic pressure as a reference solution.

Origin:

From the greek words "isos" meaning "equal" and "tonos" meaning "tension".

Examples:

1. An isotonic solution has the same osmotic pressure as blood, so it doesn"t cause water to move in or out of cells when it"s used as an IV fluid.
2. Isotonic drinks are a good choice for athletes because they replace lost fluids and electrolytes quickly.
3. An isotonic solution is one in which the concentration of dissolved particles is the same as that found in the human body.
4. Isotonic exercise refers to physical activity in which the muscle is working against a force that is equal to the force of the muscle.
5. Isotonic solutions are used in irrigation to prevent the shrinkage or swelling of tissues.