pH

**Semantic type:** Quantitative Concept

**Definition:** Quantity of dimension one used to express on a scale from 0 to 14 the amount-of-substance concentration of hydrogen ion of dilute aqueous solution, calculated as the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter.

**Synonyms:** - PH - PH - PH - [pH] - [pH] - [pH] - [pH] - [pH] - potential of Hydrogen