hydrogen ion concentration

English Thesaurus

1. the number of moles of hydrogen ions per cubic decimeter (noun.attribute)

hypernym	:	concentration,
definition	:	the strength of a solution; number of molecules of a substance in a given volume (noun.attribute)

hyponym	:	ph, ph scale,
definition	:	(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) (noun.attribute)