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3 entries found for pH.
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Main Entry: pH
Pronunciation: 'pE-'Ach
Function: noun
Etymology: German, from Potenz power + H (symbol for hydrogen)
Date: 1909
: a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents neutrality and lower numbers indicate increasing acidity and higher numbers increasing alkalinity and on which each unit of change represents a tenfold change in acidity or alkalinity and that is the negative logarithm of the effective hydrogen-ion concentration or hydrogen-ion activity in gram equivalents per liter of the solution; also : the condition represented by a pH number

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Pronunciation Symbols
\&\ as a and u in abut
\&\ as e in kitten
\&r\ as ur/er in further
\a\ as a in ash
\A\ as a in ace
\ä\ as o in mop
\au\ as ou in out
\ch\ as ch in chin
\e\ as e in bet
\E\ as ea in easy
\g\ as g in go
\i\ as i in hit
I\ as i in ice
\j\ as j in job
\[ng]\ as ng in sing
\O\ as o in go
\o\ as aw in law
\oi\ as oy in boy
\th\ as th in thin
\[th]\ as th in the
\ü\ as oo in loot
\u\ as oo in foot
\y\ as y in yet
\zh\ as si in vision
For more information see the Guide To Pronunciation.

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