Ph

Symbol for phenyl.

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Pallister-Hall [syndrome]; papillary hyperplasia; parathyroid hormone; partial hepatectomy; partial hysterectomy; passive hemagglutination; past history; patient's history; persistent hepatitis; personal history; pharmacopeia; pharmacy, pharmacist, pharmaceutical; physical history; porphyria hepatica; posterior heel; posterior hypothalamus; prehospital; previous history; primary hyperoxaluria; primary hyperparathyroidism; prostatic hypertrophy; pseudohermaphroditism; public health; pulmonary hypertension; pulmonary hypoplasia

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pH (')pē-'āch n a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents 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 and that is the negative logarithm of the effective hydrogen-ion concentration or hydrogen-ion activity in gram equivalents per liter of the solution <instead of saying that the concentration of hydrogen ion in pure water is 1.00 x 10^-7, it is customary to say that the \pH of pure water is 7 (Linus Pauling)> also the condition represented by such a number compare PK

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a measure of the concentration of hydrogen ions in a solution, and therefore of its acidity or alkalinity. A pH of 7 indicates a neutral solution, a pH below 7 indicates acidity, and a pH in excess of 7 indicates alkalinity.

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Pharmacopeia; phenyl.