One of the mysteries of the English language finally explained.
Of the concentration of a solution: expressed in terms of the quantity of osmotically active solute particles per unit; specifically expressed in osmoles of solute per litre of solution. Also: designating a solution that contains one osmole, or a specified number of osmoles, per litre of solution, or the solute present in such a solution; of or relating to osmotically active particles.
1920s. Blend of osmotic and molar.
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