ph

Optics.

phot; phots.

Words nearby ph

pg, PG-13, PGA, PGD, PGR, ph, PHA, phablet, phacelia, phaco-, phacoanaphylaxis

Definition for ph (2 of 5)

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.

Definition for ph (3 of 5)

abbreviation Chemistry.

phenyl.

Definition for ph (4 of 5)

ph.

phase.

phone.

Definition for ph (5 of 5)

P.H.

Public Health.

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ph

As we were taught in high school Chem, any pH below 7.4 is acidic.
Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous|Kent Sepkowitz|January 29, 2014|DAILY BEAST
One pH direction is no better or more natural than the other.
Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous|Kent Sepkowitz|January 29, 2014|DAILY BEAST
Mammalian cellular metabolism, aka the basic rules of being alive on planet Earth, runs best at a pH between 7.38 and 7.42.
Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous|Kent Sepkowitz|January 29, 2014|DAILY BEAST
Things on the other side of the ledger, at a pH above 7, are alkaline (also called “basic” as in acid-base).
Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous|Kent Sepkowitz|January 29, 2014|DAILY BEAST

As has been repeatedly stated, th, ph, sh are to be treated as single signs or letters.
The English Language|Robert Gordon Latham
There being no such letter as ph in the ancient alphabets, all those words, viz.
The Round Towers of Ireland|Henry O'Brien
The representation of φ by ph, and of θ by th was highly erroneous.
The English Language|Robert Gordon Latham
Digraph, dī′graf, n. two letters expressing but one sound, as ph in digraph.
Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)|Various
Ph is used for f in words derived from the Greek, as philosopher, philanthropy, Philip.
A Grammar of the English Tongue|Samuel Johnson

British Dictionary definitions for ph (1 of 4)

the internet domain name for

Philippines

British Dictionary definitions for ph (2 of 4)

noun

potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution. Pure water has a pH of 7, acid solutions have a pH less than 7, and alkaline solutions a pH greater than 7

British Dictionary definitions for ph (3 of 4)

the chemical symbol for

phenyl group or radical

British Dictionary definitions for ph (4 of 4)

ph.

abbreviation for

phase

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for 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.

Medical definitions for ph (1 of 2)

abbr.

public health

Medical definitions for ph (2 of 2)

[ 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.

Scientific definitions for ph

[ pē′āch′ ]

A numerical measure of the acidity or alkalinity of a solution, usually measured on a scale of 0 to 14. Neutral solutions (such as pure water) have a pH of 7, acidic solutions have a pH lower than 7, and alkaline solutions have a pH higher than 7. The pH of lemon juice is 2.4; that of household ammonia is 11.5. The normal pH for human blood is 7.4.♦ The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance. The pH scale was devised in 1923 by Danish biochemist Søren Peter Lauritz Sørensen (1868-1969).

单词	ph
释义	ph Optics. phot; phots. Words nearby ph pg, PG-13, PGA, PGD, PGR, ph, PHA, phablet, phacelia, phaco-, phacoanaphylaxis Definition for ph (2 of 5) 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. Definition for ph (3 of 5) Ph abbreviation Chemistry. phenyl. Definition for ph (4 of 5) ph. phase. phone. Definition for ph (5 of 5) P.H. Public Health. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ph As we were taught in high school Chem, any pH below 7.4 is acidic. Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous\|Kent Sepkowitz\|January 29, 2014\|DAILY BEAST One pH direction is no better or more natural than the other. Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous\|Kent Sepkowitz\|January 29, 2014\|DAILY BEAST Mammalian cellular metabolism, aka the basic rules of being alive on planet Earth, runs best at a pH between 7.38 and 7.42. Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous\|Kent Sepkowitz\|January 29, 2014\|DAILY BEAST Things on the other side of the ledger, at a pH above 7, are alkaline (also called “basic” as in acid-base). Alkalinizing Someone to Improve His or Her Health Is Simple-Minded, Fatuous, and Dangerous\|Kent Sepkowitz\|January 29, 2014\|DAILY BEAST As has been repeatedly stated, th, ph, sh are to be treated as single signs or letters. The English Language\|Robert Gordon Latham There being no such letter as ph in the ancient alphabets, all those words, viz. The Round Towers of Ireland\|Henry O'Brien The representation of φ by ph, and of θ by th was highly erroneous. The English Language\|Robert Gordon Latham Digraph, dī′graf, n. two letters expressing but one sound, as ph in digraph. Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)\|Various Ph is used for f in words derived from the Greek, as philosopher, philanthropy, Philip. A Grammar of the English Tongue\|Samuel Johnson British Dictionary definitions for ph (1 of 4) ph the internet domain name for Philippines British Dictionary definitions for ph (2 of 4) pH noun potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution. Pure water has a pH of 7, acid solutions have a pH less than 7, and alkaline solutions a pH greater than 7 British Dictionary definitions for ph (3 of 4) Ph the chemical symbol for phenyl group or radical British Dictionary definitions for ph (4 of 4) ph. abbreviation for phase Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for ph 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 New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for ph (1 of 2) PH abbr. public health Medical definitions for ph (2 of 2) 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. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for ph pH [ pē′āch′ ] A numerical measure of the acidity or alkalinity of a solution, usually measured on a scale of 0 to 14. Neutral solutions (such as pure water) have a pH of 7, acidic solutions have a pH lower than 7, and alkaline solutions have a pH higher than 7. The pH of lemon juice is 2.4; that of household ammonia is 11.5. The normal pH for human blood is 7.4.♦ The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance. The pH scale was devised in 1923 by Danish biochemist Søren Peter Lauritz Sørensen (1868-1969). The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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