Definitions for PH
Random House Webster's College Dictionary
pH
the symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter, used to describe the acidity or alkalinity of a chemical solution on a scale of 0 (more acidic) to 14 (more alkaline).
Category: Chemistry
Origin of pH:
1909; < G P(otenz) potency + H(ydrogen)
ph.
phase.
phone.
P.H.
Public Health.
Princeton's WordNet
pH, pH scale(noun)
(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);
Wiktionary
pH(Abbreviation)
The negative of the logarithm to the base 10 of the concentration of hydrogen ions, measured in moles per liter; a measure of acidity or alkalinity of a substance, which takes numerical values from 0 (maximum acidity) through 7 (neutral) to 14 (maximum alkalinity).
ph(Abbreviation)
phot
Origin: From p, denoting negative logarithm, and H, denoting hydrogen.
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