Definitions for tonicitytoʊˈnɪs ɪ ti
Random House Webster's College Dictionary
to•nic•i•tytoʊˈnɪs ɪ ti(n.)
tonic quality or condition.
the state of bodily tone.
Origin of tonicity:
tonicity, tonus, tone(noun)
the elastic tension of living muscles, arteries, etc. that facilitate response to stimuli
"the doctor tested my tonicity"
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 state of healthy tension or partial contraction of muscle fibers while at rest; tone; tonus