|1.||the state, condition, or quality of being tonic|
|2.||physiol another name for tonus|
tonicity to·nic·i·ty (tō-nĭs'ĭ-tē)
Normal firmness or functional readiness in body tissues or organs.
The sustained partial contraction of resting or relaxed muscles.
The osmotic pressure or tension of a solution, usually relative to that of blood.