osmolarity

Osmolarity measures the concentration of particles dissolved in a solution, indicating how "dense" the particles are within a specific volume. In biological contexts, it helps assess the balance of fluids and solutes in blood, urine, or other bodily fluids. Higher osmolarity means more particles per liter, which can influence how fluids move between cells and blood vessels. Maintaining proper osmolarity is crucial for cell function and overall health, as it helps regulate hydration, blood pressure, and nutrient transport.