Definition of osmolal in US English:

osmolal

adjective

Biochemistry
  • Of the concentration of a solution: expressed in osmoles of solute per kilogram of solvent. Also: designating a solution that contains one osmole, or a specified number of osmoles, per kilogram of solvent, or the solute present in such a solution.

Origin

1930s; earliest use found in Journal of Clinical Investigation. Blend of osmotic and molal.

Pronunciation

osmolal

/ɒzˈməʊləl/