Osmolarity

Definition

The concentration of osmotically active particles in a solution. Basically, how 'salty' your blood is and why your cells don't shrivel up or explode.

Example Usage

The patient's hypernatremia caused elevated serum osmolarity, requiring careful fluid replacement to normalize electrolytes.

Origin

From Greek 'osmos' (thrust/impulse) and 'olarity' (concentration)

Fun Fact

Your body maintains serum osmolarity between 280-300 mOsm/kg with remarkable precision. Even small deviations cause serious problems.

Source: Clinical Chemistry and Nephrology Standards

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