pH
|p/H|
B2
/piːˈeɪtʃ/
acidity measure
Etymology
Etymology Information
'pH' originates from German, specifically the term 'potenz' meaning 'power' and 'H' for 'hydrogen', indicating the power of hydrogen concentration.
Historical Evolution
'pH' was introduced by Danish chemist Søren Peder Lauritz Sørensen in 1909.
Meaning Changes
Initially, it meant 'power of hydrogen', and this meaning has largely remained the same in modern usage.
Meanings by Part of Speech
Noun 1
a measure of the acidity or alkalinity of a solution, on a scale of 0 to 14, where 7 is neutral, lower values are more acidic, and higher values are more alkaline.
The pH of pure water is 7.
Synonyms
Last updated: 2025/01/11 11:42