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Definition of Osmolarity

Osmolarity: The concentration of osmotically active particles in solution, which may be quantitatively expressed in osmoles of solute per liter of solution. See also: Plasma osmolarity.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=24595
Last Editorial Review: 6/19/2004

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