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Definition of Alkalinity

Babylon English

quality of a base, quality of having a pH level higher than 7 (Chemistry)
Alkalinity Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
The quality which constitutes an alkali; alkaline property.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

\al`ka*lin"i*ty\ (&?;), n. the quality which constitutes an alkali; alkaline property.

WordNet 2.0

1. pH values above 7
(antonym) acidity
(hypernym) pH, pH scale
Alkalinity Definition from Science & Technology Dictionaries & Glossaries
Electrochemistry Dictionary
See pH.
General Chemistry Glossary
 Say it 
A measure of a material's ability to neutralize acids . Alkalinities are usually determined using titration .
Oil and Gas Field Glossary
The combining power of a base measured by the maximum number of equivalents of an acid with which it can react to form a salt. In water analysis, it represents carbonates, bicarbonates, hydroxides, and occasionally the borates, silicates, and phosphates in the water. It is determined by titration with standard acid to certain datum points.
Glossary of water terms
the capacity of water for neutralizing an acid solution.
Technical English by wpv
An expression of the total basic anions (hydroxyl groups) present in a solution. It also represents, particularly in water analysis, the bi-carbonate, carbonate, and occasionally, the borate, silicate, and phosphate salts which will react with water to produce the hydroxyl groups.
Alkalinity Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
Alkalinity is the name given to the quantitative capacity of an aqueous solution to neutralize an acid. Measuring alkalinity is important in determining a stream's ability to neutralize acidic pollution from rainfall or wastewater. It is one of the best measures of the sensitivity of the stream to acid inputs. There can be long-term changes in the alkalinity of streams and rivers in response to human disturbances. Alkalinity does not measure the same property as the pH (namely basicity).

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Alkalinity Definition from Society & Culture Dictionaries & Glossaries
EPA Glossary of Climate Change Terms
Having the properties of a base with a pH of more than 7. A common alkaline is baking soda.
Provided as a public service by the U.S. Environmental Protection Agency. Reference list click here.
EPA Terms of Environment
The capacity of bases to neutralize acids. An example is lime added to lakes to decrease acidity.
Provided as a public service by the U.S. Environmental Protection Agency
Environmental Engineering (English ver.)
The capacity of water for neutralizing an acid solution. Alkalinity of natural waters is due primarily to the presence of hydroxides, bicarbonates, carbonates and occasionally borates, silicates and phosphates. It is expressed in units of milligrams per liter (mg/l) of CaCO3 (calcium carbonate) or as microequivalents per liter (µeq/l) 20 µeq/l = 1 mg/l of CaCO3. A solution having a pH below 4.5 contains no alkalinity. Low alkalinity is the main indicator of susceptibility to acid rain. Increasing alkalinity is often related to increased algal productivity. Lakes with watersheds that have sedimentary carbonate rocks are high in dissolved carbonates (hard-water lakes). Whereas lakes in granite or igneous rocks are low in dissolved carbonates (soft water lakes).
  The capacity of water to neutralize acids. This capacity is caused by the water's content of carbonate, bicarbonate, hydroxide and occasionally borate, silicate, and phosphate. Alkalinity is expressed in milligrams per liter of equivalent calcium carbonate. Alkalinity is not the same as pH because water does not have to be strongly basic (high pH) to have a high alkalinity. Alkalinity is a measure of how much acid can be added to a liquid without causing a great change in pH.
Alkalinity Definition from Medicine Dictionaries & Glossaries
Dictionary of Medicine (Shahram)
level of alkali in a body; hyperventilation causes fluctuating carbon dioxide levels in the blood, resulting in an increase of blood alkalinity