What does osmolality mean?
Osmolality is a measure of the concentration of osmotically active particles in a solution. It is an important concept in physiology and medicine, particularly in the study of fluid balance and hydration status. The osmolality of a solution can be measured using various techniques, including freezing-point depression and vapor pressure osmometry. In clinical settings, osmolality is used to diagnose and monitor conditions such as dehydration, hypernatremia, and hyponatremia. Understanding osmolality is crucial for healthcare professionals to provide accurate diagnoses and effective treatments.
noun
The concentration of osmotically active particles in a solution, typically expressed in units of osmoles per kilogram of solvent.
- 1. The concentration of osmotically active particles in a solution.
"The osmolality of the blood plasma was measured to determine the patient's hydration status."
"The osmolality of the blood plasma was measured to determine the patient's hydration status."
"The researcher measured the osmolality of the solution to determine its suitability for cell culture."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of osmolality
The term 'osmolality' is derived from the Greek words 'osmo-' meaning 'push' or 'pressure' and 'mol-' meaning 'molecule'. It was first used in the late 19th century to describe the concentration of osmotically active particles in a solution.
Usage notes
Osmolality is a technical term used primarily in scientific and medical contexts. It is often used interchangeably with 'osmolarity', although some researchers make a distinction between the two terms.