The concentration of osmotically active particles expressed in terms of osmoles of solute per litre of solution.
Concentration of dissolved substance per liter of solution (such as plasma). Compare to osmolality, the concentration of dissolved substances per kilogram of solvent (often water). Osmolarity is affected by the volume of the various solutes in the solution and the temperature, while osmolality is not.
Total concentration of dissolved substances in a solution; osmotic concentration.
The concentration of osmotically active particles in solution.