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Osmosis
Definition 1
Diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal. (NCI Thesaurus)
Definition 2
Having to do with osmosis (the passage of a liquid through a membrane from a less concentrated solution to a more concentrated one). This causes the more concentrated solution to become diluted, and makes the concentrations in both solutions more equal. Osmotic also refers to a type of laxative that increases the amount of water in the large intestine, which softens the stool to help it pass more easily. (NCI Dictionary)
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The determination of the osmoles of solute per kilogram of solvent present in a sample.
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An element with atomic symbol Os, atomic number 76, and atomic weight 190.23.