Skip to main content
osmolality

osmolality

9.6
The amount of dissolved particles in one kilogram of a liquid
  • noun
  • /ˌɒz.məˈlæl.ɪ.ti/
  • Specialized
translation icon : osmolalidad
  • Serum osmolality and serum vasopressin levels were obtained at four junctures perioperatively.
  • osmolality levels
  • increased osmolality

Examples

  • The hormone system is a very powerful mechanism for controlling extracellular fluid osmolality.

    Academic text (1998)
  • In addition, osmolality levels did not change over time.

    Academic text (1998)
  • Increased plasma osmolality is only one of them.

    Academic text (1998)
  • Osmolality levels did not change significantly over time.

    Academic text (1998)
  • Extracellular fluid osmolality averages almost exactly 300 mOsm/liter.

    Academic text (1998)
  • An increase in serum osmolality stimulates osmoreceptors located in the supraoptic nucleus of the hypothalamus to release ADH.

    Academic text (1998)
  • The osmolality of the solution increased due to the addition of salt.

  • To maintain proper kidney function, the body regulates the osmolality of the blood.

  • Doctors measure the osmolality of blood serum to assess a patient's hydration status.

Surface Forms

osmolality singular
osmolalities plural

Morphology

osmolality = osmolal (semi-transparent) = osmole + osmolal + osmole + al + ity

The final step is a regular noun formation from the adjective 'osmolal' with '-ity' denoting a state or measure.

Etymology

Osmolality begins with osmo-, from a Greek idea meaning 'push' that you see in osmosis, and ends with -ality, meaning 'state' or 'quality'. So, osmolality is the 'state' of how much dissolved 'stuff' is in a solution — the concentration that makes water move and affects cells.