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n. pl. al·ka·lin·i·ties
The alkali concentration or alkaline quality of an alkali-containing substance.
1. (Chemistry) the quality or state of being alkaline
2. (Chemistry) the amount of alkali or base in a solution, often expressed in terms of pH
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|Noun||1.||alkalinity - pH values above 7|
pH, pH scale - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
acidity - pH values below 7