Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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adv
Initialism of phonetically: A notation used in transcripts to indicate that the transcriber is unsure of the spelling, usually of a name, and has spelled phonetically.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism, not-comparable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
Initialism of Pakatan Harapan.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism
Qualifier: Malaysian politics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
Initialism of Pornhub.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Measure of the acidity (low pH) or basicity (high pH) of an aqueous solution, equal to the negative logarithm of the concentration of hydronium ions in molars.
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of public house.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of penthouse.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of preliminary hearing.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: law
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of public health.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Qualifier: policy
Topics: health, medicine, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of physical health.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of public holiday.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of polynomial hierarchy.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: computer, computing, engineering, mathematics, natural-sciences, physical-sciences, science, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of professional hydrologist.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: business, geography, hydrology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of pommel horse.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of Purple Heart.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of porotic hyperostosis.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of phot.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Misspelling of pH.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, misspelling
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of phenyl.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, uncountable
Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
(from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: pH scale
Antonyms: none provided
Broader terms: hydrogen ion concentration
Narrower terms: acidity, alkalinity, neutrality
History
Originally introduced in 1909 by S. P. L. Sørensen, using the notation p_(H+) for what he called the “hydrogen ion exponent” (Wasserstoffionenexponent) of a solution. He may have chosen the symbol p arbitrarily; another suggestion is that it either an abbreviation of French puissance, German Potenz, Danish potens (“power”) or English potential. The H is the international chemical symbol for the element hydrogen.
Across languages
5 source translations are retained for this English entry.
