PH (disambiguation)

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:

Sciences

Acidity the numerical value indicating acidity
PH (complexity), the union of all complexity 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

PH, Port Harcourt, (alternative name of the city)
PH, the Philippines' ISO country code
- .ph, the Philippines' Internet country code top-level domain
A post-nominal designation for recipients of the Purple Heart
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
Planet Hunters, a group that hunts for exoplanets
Poul Henningsen (1894–1967) Danish writer and designer referred to as PH in Denmark
PH, public house (an abbreviation used on maps)
Ph could also refer to the pornographic site, Pornhub
PistonHeads, a motoring website and forum