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n.
the strength of a solution, expressed as the weight of dissolved substance in grams per litre divided by its molecular weight, i.e. the number of moles per litre. Molarity is indicated as 0.1 M, 1 M, 2 M, etc.
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mo·lar·i·ty (mo-larґĭ-te) the number of moles of a solute per liter of solution. Cf. molality.Medical dictionary. 2011.