1. plural of tonicity; the degrees of tension or tone in muscles or tissues
Usage: medical; physiology
2. plural of tonicity; the osmotic pressures of solutions relative to cell membranes
Usage: biology; chemistry

Examples

• The physical therapist measured the tonicities of various muscle groups.
• Different tonicities in the patient’s limbs indicated neurological damage.
• The lab compared the tonicities of several salt solutions.
• Cell membranes respond differently to varying tonicities in their environment.
• Researchers studied how tonicities affect plant cell behavior.
• The doctor noted abnormal tonicities during the examination.