noun
- the concentration of osmotically active particles in a solution expressed as osmoles per kilogram of solvent
Usage: medical; chemistry
Examples
- The doctor ordered blood tests to check the patient’s serum osmolality.
- Normal plasma osmolality ranges from 280 to 295 mOsm/kg.
- Dehydration can cause an increase in blood osmolality.
- The laboratory measured urine osmolality to assess kidney function.
- High osmolality in the blood can indicate diabetes or kidney problems.
- Osmolality is different from osmolarity in how the concentration is calculated.