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Dictionary

Ph

Chem.
phenyl.

pH

Chem.
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.

ph

Optics.
phot; phots.

ph.

1. phase.
2. phone.

P.H.

Public Health.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

PGA

PHA

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