tonicity

Normal firmness or functional readiness in body tissues or organs.

The sustained partial contraction of resting or relaxed muscles.

In zoology, occasionally employed to denote the quality of dead, as well as living, tissue.

Tone; the state or property of possessing tone or of being tonic; specifically, in physiol; the elasticity of living parts—a property of the muscles which is distinct from true irritability, and determines the general tone of the solids.

In music. See the quotation.

The state of healthy tension or partial contraction of muscle fibers while at rest; tone; tonus.

The normal presence of tone or tension in a muscle or organ; tonus

The ability of a solution to exert an osmotic pressure upon a membrane

the elastic tension of living muscles, arteries, etc. that facilitate response to stimuli