The term isotonic may refer to;

• Isotonic (exercise physiology) for the term associated with muscle contraction
• An isotone in nuclear physics
• Isotonic solutions, solutions that have equal osmotic pressure, such as the isotonic environment in cell biology
• Isotonic sports drink to assist athletes rehydrate while balancing electrolytes
• An Isotonic cellular environment happens when an equal concentration exists inside and outside the cell.

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.