phs Meaning, Definition & Usage

1. noun an agency that serves as the office of Surgeon General; includes agencies whose mission is to improve the public health
   United States Public Health Service.
   
2. 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);
   pH; pH scale.
   

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