hydrogen ion concentration
Also found in: Dictionary, Thesaurus, Medical, Acronyms.
hydrogen ion concentration[′hī·drə·jən ′ī‚än ‚käns·ən‚trā·shən]
The normality of a solution with respect to hydrogen ions, H+; it is related to acidity measurements in most cases by pH = log 1/2 [1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.