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P & H

pH is defined as the degree of acidity or alkalinity of a solution.

(abbreviation)

An example of a pH is 7 for distilled water, which mean it's neutral.

See P & H in Webster's New World College Dictionary

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noun

the degree of acidity or alkalinity of a solution; it is the logarithm of the reciprocal of the hydrogen-ion concentration in gram equivalents per liter of solution (Ex: .0000001 gram atom of hydrogen ion per liter yields a numeric reciprocal of ten million, the log of ten million equals 7, therefore 7 is the pH): a pH of 7, the value for pure distilled water, is regarded as neutral; pH values from 7 to 0 indicate increasing acidity and from 7 to 14 indicate increasing alkalinity

Origin: < Fr p(ouvoir) h(ydrogène), lit., hydrogen power

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See P & H in American Heritage Dictionary 4

noun

A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale commonly in use ranges from 0 to 14.

Origin:

Origin: p(otential of) h(ydrogen)

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