noun Chemistry.
alkaline condition; the quality that constitutes an alkali.

1780–90; alkaline + -ity

hyperalkalinity, noun
superalkalinity, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
alkalinity (ˌælkəˈlɪnɪtɪ)
1.  the quality or state of being alkaline
2.  the amount of alkali or base in a solution, often expressed in terms of pH

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

alkalinity al·ka·lin·i·ty (āl'kə-lĭn'ĭ-tē)
The alkali concentration or alkaline quality of a substance that contains alkali.

The American Heritage® Stedman's Medical Dictionary
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