ph

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Optics.

phot; phots.

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Words nearby ph

pg, PG-13, PGA, PGD, PGR, ph, PHA, phablet, phacelia, phacoemulsification, phacolite

Other definitions 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.

Other definitions for ph (3 of 5)

abbreviation Chemistry.

phenyl.

Other definitions for ph (4 of 5)

ph.

abbreviation

phase.

phone.

Other definitions for ph (5 of 5)

P.H.

abbreviation

Public Health.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ph in a sentence

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

He had a Ph. D in history and was a college professor before entering politics.
George McGovern, Democratic Icon and Former Presidential Candidate, Dies at Age 90|Eleanor Clift|October 21, 2012|DAILY BEAST
Next week a prom'nent Jap'nese statesman was discovered payin' a socyal visit to th' Ph'lippeens.
Mr. Dooley Says|Finley Dunne
An' yet, Hinnissy, I dinnaw what to do about th' Ph'lippeens.
Mr. Dooley in Peace and in War|Finley Peter Dunne
The Ph. Baden directs its preparation by displacement with cold water.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
O-ho-ph-sha, the Small Whoop; a hard-visaged warrior, of most remarkable distinction.
Adventures of the Ojibbeway and Ioway Indians in England, France, and Belgium; Vol. I (of 2)|George Catlin
Go-to-kw-ph-ah, He who Stands by Himself; a brave of distinction, with his hatchet in his hand.
Adventures of the Ojibbeway and Ioway Indians in England, France, and Belgium; Vol. I (of 2)|George Catlin

British Dictionary definitions for ph (1 of 4)

the internet domain name for

Philippines

British Dictionary definitions for ph (2 of 4)

the chemical symbol for

phenyl group or radical

British Dictionary definitions for ph (3 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 (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

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).

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.