Look up PH, pH in Wiktionary, the free dictionary.

PH, ph, pH, and Ph are initialisms or other abbreviations that may refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... Acronyms and initialisms are abbreviations formed from the initial letter or letters of words, such as NATO and XHTML, and are pronounced in a way that is distinct from the full pronunciation of what the letters stand for. ...

Entertainment

• Paradise Hotel, a Fox reality show
• Plundered Hearts, an interactive fiction computer game
• The Legend of Zelda: Phantom Hourglass, an upcoming video game by Nintendo

Paradise Hotel is a popular 2003 US reality television program broadcast on Fox. ... Plundered Hearts is an interactive fiction computer game created by Amy Briggs and published by Infocom in 1987. ...

Sciences

• pH, a measure of acidity in chemistry
• PH (complexity), the union of all complexity classes in the polynomial hierarchy in computational complexity theory
• -Ph, a phenyl ring in organic chemistry
• ph or phot, a measurement of illuminance (photometry)
• Pleckstrin homology domain, a part of many proteins which bind phosphoinositides with high affinity
• pulmonary hypertension, a medical condition

For other uses, see PH (disambiguation). ... In computational complexity theory, the complexity class PH is the union of all complexity classes in the polynomial hierarchy: PH is contained in the complexity classes PPP (the class of problems that are decidable by a polynomial time Turing machine with an access to PP oracle) and PSPACE. PH has... In chemistry, the phenyl group or phenyl ring (often abbreviated as -Ph) is the functional group with the formula -C6H5 where the six carbon atoms are arranged in a cyclic manner. ... This page is a candidate to be moved to Wiktionary. ... Pleckstrin homology domain (PH domain) is a protein region of approximately 120 amino acids that can bind Phosphatidylinositol lipids within biological membranes (such as Phosphatidylinositol (3,4,5)-trisphosphate and phosphatidylinositol (4,5)-bisphosphate), and proteins such as the βγ-subunits of heterotrimeric G proteins and protein kinase C. Through these... In medicine, pulmonary hypertension (PH) is an increase in blood pressure in the pulmonary artery or lung vasculature, leading to shortness of breath, dizziness, fainting, and other symptoms, all of which are exacerbated by exertion. ...

Other

• Ph (digraph), a digraph that represents the phoneme /f/ in phonetics
• Ph is an old name service protocol described by RFC 2378
• PH, for Planet Hope
• PH, the Philippines' ISO country code
• .ph, the Philippines' Internet country code top-level domain
• phi (letter), the Greek letter (φ)
• Polynesian Airlines' IATA airline designator
• Ph.D, Philosophiæ Doctor (Latin)

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