1. the normal degree of vigor and tension in living tissue, especially muscle tissue
Usage: medical; biology
2. the osmotic pressure of a solution, especially in relation to body fluids
Usage: medical; physiology

Examples

• The physical therapist assessed the patient’s muscle tonicity after the injury.
• Regular exercise helps maintain good tonicity in skeletal muscles.
• The doctor measured the tonicity of the IV solution before administration.
• Loss of tonicity in the bladder can lead to incontinence.
• The lab technician compared the tonicity of different saline solutions.
• Dehydration can affect the tonicity of body fluids.