PH (disambiguation)
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Look up PH, pH, or ph in Wiktionary, the free dictionary. |
pH is a measure of acidity or alkalinity.
PH, ph, pH, and Ph may also refer to:
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[edit] Sciences
- PH (complexity), the union of all people classes in the polynomial hierarchy in computational complexity theory
- Phenyl group, either -Ph or Φ, highly-stable and aromatic hydrocarbon unit found in many organic compounds
- phot, or ph, a measurement of illuminance (photometry)
- pico- henry (unit), an SI Unit of electrical inductance
- Pleckstrin homology domain, a part of many proteins which bind phosphoinositides with high affinity
- Pulmonary hypertension, a medical condition
- Soil pH is a measure of soil acidity or soil alkalinity
[edit] Aviation
- PH, Aircraft registration prefix for the Netherlands
- Polynesian Airlines' IATA airline designator
- Transavia.com Denmark's IATA airline designator
[edit] Other uses
- PH, the Philippines' ISO country code
- .ph, the Philippines' Internet country code top-level domain
- pʰ, a phoneme
- Ph (digraph), a common digraph that represents the phoneme /f/ (voiceless labiodental fricative) in phonetics
- Ph protocol, an early web database search for CCSO Nameserver described by RFC 2378
- Poul Henningsen (1894–1967) Danish writer and designer referred to as PH in Denmark
- on maps, an abbreviation for a Public house
[edit] See also
- phi, the Greek letter (φ)
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