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)
• Syn: ↑pH
• Topics: ↑chemistry, ↑chemical science
• Hypernyms: ↑hydrogen ion concentration
• Hyponyms: ↑acidity, ↑alkalinity, ↑neutrality
Useful english dictionary. 2012.