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Definition for ph (2 of 5)
Definition for ph (3 of 5)
Definition for ph (4 of 5)
Definition for ph (5 of 5)
Example sentences from the Web for ph
As we were taught in high school Chem, any pH below 7.4 is acidic.
One pH direction is no better or more natural than the other.
Mammalian cellular metabolism, aka the basic rules of being alive on planet Earth, runs best at a pH between 7.38 and 7.42.
Things on the other side of the ledger, at a pH above 7, are alkaline (also called “basic” as in acid-base).
As has been repeatedly stated, th, ph, sh are to be treated as single signs or letters.
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.
Digraph, dī′graf, n. two letters expressing but one sound, as ph in digraph.
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
British Dictionary definitions for ph (2 of 4)
British Dictionary definitions for ph (3 of 4)
the chemical symbol for
British Dictionary definitions for ph (4 of 4)
Medical definitions for ph (1 of 2)
Medical definitions for ph (2 of 2)
Scientific definitions for ph
Cultural definitions for ph
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.