Tonicity
/təˈnɪsɪti/ noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 The normal presence of tone or tension in a muscle or organ; tonus
- 2 the elastic tension of living muscles, arteries, etc. that facilitate response to stimuli wordnet
- 3 The ability of nonpenetrable solutes in a solution to exert an osmotic pressure upon a membrane
Etymology
From tonic + -ity.