ph

POS

Noun

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WORDNET DICTIONARY

Noun ph has 1 sense

ph(n = noun.attribute) ph scale - (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); Array

is a kind of hydrogen ion concentration

has particulars: acidity, alkalinity, neutrality

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OXFORD DICTIONARY

ph, n. Chem. a logarithm of the reciprocal of the hydrogen-ion concentration in moles per litre of a solution, giving a measure of its acidity or alkalinity.

Etymology

G, f. Potenz power + H (symbol for hydrogen)

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