PAH

PAH or Pah may refer to:

In chemistry and biology:

• Polycyclic aromatic hydrocarbon, one of a class of chemical compounds, organic pollutants
• Phenylalanine hydroxylase, an enzyme involved in breaking down phenylalanine
• Para-aminohippurate, a substance used in the measurement of blood flow in the kidneys
• Pulmonary arterial hypertension, a condition of elevated blood pressure in the pulmonary artery
• Primary alveolar hypoventilation, a condition of inadequate air movement in the lungs
• PAH world hypothesis, hypothesis that proposes that the use of polycyclic aromatic hydrocarbon was a means for the origin of life
• Poly(allylamine hydrochloride), Polyelectrolyte
• PAH clearance, para-aminohippuric acid clearance as a measurement of renal plasma flow
• Polyanhydrides, a class of biodegradable polymers

In fiction:

• Pah, the lunar deity in Pawnee mythology
• Pah Wraith, evil Bajoran Prophets in the fictional Star Trek universe

Other:

• Pan-American Highway, Americas
• PAH, the IATA airport code for Barkley Regional Airport in Paducah, Kentucky, USA
• Another spelling for Pa (Māori), word meaning a fortified village or redoubt
• An onomatopoeic word for a noise of disgust
• Project Affected Homes (World Bank term)

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