1. A unit of osmotic pressure equal to the amount of solute that would produce an osmotic pressure of one atmosphere when dissolved in one liter of solvent at standard temperature.
Usage: technical; chemistry; medicine

Examples

• The osmol is commonly used in medical laboratories to measure the osmolarity of blood plasma.
• A solution containing one osmol of solute per liter has an osmolarity of one osmol per liter.
• Doctors monitor osmol concentrations to assess kidney function and electrolyte balance.
• The patient's serum osmolarity was measured in milliosmols per kilogram of water.