Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Language: German
Origin: potenz 'power' + H, sign for hydrogen

pH

 noun
     
Related topics: Chemistry
pH also pH value [singular]
HC a number on a scale of 0 to 14 which shows how acid or alkaline a substance is
pH of
soil with a pH of 3.1
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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