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Definition of PH - 21 dictionary results

pH

Chemistry.
the symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter, used to express the acidity or alkalinity of a solution on a scale of 0 to 14, where less than 7 represents acidity, 7 neutrality, and more than 7 alkalinity.

ph

Optics.
phot; phots.

ph.

1. phase.
2. phone.

P.H.

Public Health.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pH   (pē'āch')   
n.  A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale commonly in use ranges from 0 to 14.

[p(otential of) h(ydrogen).]
Ph  
abbr.   Bible
Philippians
PH  
abbr.  
  1. penthouse

  2. public health

  3. Purple Heart

Phi·lip·pi·ans   (fĭ-lĭp'ē-ənz)   
pl.n.   (used with a sing. verb) Abbr. Phil. or Phl or Ph
See Table at Bible.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

pH [(pee-aych)]

In chemistry, a measure of the strength of an acid or a base. A neutral solution has a pH of 7; acids a pH between 0 and 7; bases a pH from 7 to 14. Specially treated strips of paper (see litmus), or more precise instruments, may be used to measure pH.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

pH 
1909, from Ger. PH, introduced by S.P.L. Sörensen, from P, for Ger. Potenz "potency, power" + H, symbol for the hydrogen ion that determines acidity or alkalinity.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: ph
Function: abbreviation
1 pharmacopoeia
2 phosphor
3 phot

Main Entry: pH
Pronunciation: (')pE-'Ach
Function: noun
: a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7represents 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 andthat is the negative logarithm of the effective hydrogen-ion concentration or hydrogen-ion activity in gram equivalents per liter of the solution 7, it is customary to say that the pH of pure water is 7 —Linus Pauling>; also : the conditionrepresented by such a number —compare PK
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

pH (pē'āch')
n.
A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale commonly in use ranges from 0 to 14.

PH or P.H.
abbr.
public health

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Computing Dictionary

PH tool
The tool for looking up people in Eudora on the Macintosh. Equivalent to Unix's finger service.
(1995-03-31)

ph networking
The country code for the Philippines.
(1999-01-27)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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Abbreviations & Acronyms
pH
potential of hydrogen (0 to 14 scale—0, very acidic; 7, neutral; 14, very alkaline)
Ph
Philippians
PH
  1. penthouse

  2. public health

  3. Purple Heart

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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