PH (disambiguation)

PH most commonly refers to:

  • pH, a measure of acidity or alkalinity.
  • Philippines (ISO country code PH), a country located in Southeast Asia

PH, ph, pH, and Ph may also refer to:

Arts and media

  • PistonHeads, a motoring website and forum
  • PH (band), formerly known as Mr. Peter Hayden, a Finnish band
  • Pornhub, a pornographic video sharing website

Aviation

Companies and organizations

Places

Science and technology

Chemistry

  • Phenyl group, either -Ph or Φ, highly-stable and aromatic hydrocarbon unit found in many organic compounds
  • Pleckstrin homology domain, a part of many proteins which bind phosphoinositides with high affinity

Computing

  • .ph, the Philippines' Internet country code top-level domain
  • Ph protocol, an early web database search for CCSO Nameserver described by RFC 2378
  • PH (complexity), the union of all complexity classes in the polynomial hierarchy in computational complexity theory

Physics

  • Phot, or ph, a measurement of illuminance, in photometry
  • Picohenry, an SI Unit of electrical inductance

Other sciences

Other uses

  • pʰ, a phoneme
  • Ph (digraph), a common digraph that represents the phoneme /f/ (voiceless labiodental fricative) in phonetics
  • PH, abbreviation for professional hunter used in East and Southern Africa
  • (ph), a notation used in transcripts to indicate that the transcriber does not know the spelling, usually of a name, and has spelled it as it was pronounced (phonetically)
  • Poul Henningsen (1894–1967), a Danish writer and designer referred to as PH in Denmark
  • Public house, most commonly referred to as pub, an establishment licensed to serve alcoholic drinks
  • Purple Heart, a US military award, in post-nominal designation
  • Pinch hitter, in baseball
  • abbreviation used to denote the English regnal years of Philip II of Spain
  • P, abbreviation (e.g. on maps) for parish, also in the meaning of civil parish
  • Phillips type of cross-head screw drive bits

See also

  • Phi (φ), a letter of the Greek alphabet
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