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[al-kuh-lin-i-tee] /ˌæl kəˈlɪn ɪ ti/
noun, Chemistry
alkaline condition; the quality that constitutes an alkali.
Origin of alkalinity
1780-90; alkaline + -ity
Related forms
hyperalkalinity, noun
superalkalinity, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for alkalinity
  • The basic chemistry required for their existence becomes too difficult at low levels of ocean alkalinity.
  • Concrete's high alkalinity inhibits the oxidation of the reinforcing steel.
  • Control the acidity and alkalinity and provide leavening.
  • Ponds with acidic bottom soils that are filled with poorly mineralized water characteristically have low alkalinity and hardness.
  • Net alkalinity targets can be achieved by reducing acidity, increasing total alkalinity, or some combination of both.
  • Bicarbonate and carbonate are the major contributors to alkalinity.
  • alkalinity can be used as a measure of water fertility.
  • The mole-balance equation for alkalinity is used only in speciation calculations and in inverse modeling.
  • Water quality parameters such as pH, temperature, and alkalinity may dictate effectiveness of the coagulation-filtration process.
British Dictionary definitions for alkalinity


the quality or state of being alkaline
the amount of alkali or base in a solution, often expressed in terms of pH
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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alkalinity in Medicine

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
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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