HPA may refer to:


*Home Price Appreciation, the change in value of a single-family home, calculated using the United States Office of Federal Housing Enterprise Oversight's House Price Index


*Halifax Port Authority, a port authority operating as a not-for-profit Crown corporation of the Government of Canada
*Health Protection Agency, an independent health organization in the United Kingdom responsible for protecting the population from hazards such as radiation, chemicals, poisons and infectious diseases
*Hurlingham Polo Association, the governing body for polo in the UK

Measurement unit

*Hectopascal (hPa), a unit of pressure equivalent to about 1/1000 of 1 atmosphere.


*Hypothalamic-pituitary-adrenal axis (physiology), how the hypothalamus, pituitary and adrenal glands work together to regulate hormone levels and maintain homeostasis
*Human physical appearance (anthropology)
*Human platelet antigens (Clinical Medicine, Blood transfusion, alloantigens)
*Heteropoly acid, often used as an acidic catalyst


*High Performance Addressing, an LCD display technology, a passive-matrix display technology which provides better response rates and contrast than traditional LCD displays. They aren't as crisp or fast as active-matrix (TFT) displays, however they're a lot cheaper to produce. HPA was used some years ago in entry level notebooks, but now it has practically disappeared as TFTs are less expensive
*High Power Amplifier (satellite dish), used in two-way satellite internet (this is the transceiver part)
*Host Protected Area, a reserved area on the data storage that is outside file system of the operating system running. Such area is hidden from the operating system and the file system, and it is normally unable to view the content except with special tools
*Human-powered aircraft (human powered transport)
*High Pressure Air (paintball/airsoft) is used as a source of propulsion in the sport paintball and in custom gas airsoft guns.


*H. Peter Anvin (often abbreviated "hpa"), famous computer programmer and Linux hacker.

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Look at other dictionaries:

  • hPa — hPa: Einheitenzeichen für ↑ Hektopascal. * * * hPa = Hektopascal. * * * HPA   [Abk. für High Performance Adressing, dt. »Hochleistungsadressierung«], Verfahren, das sowohl die Reaktionsgeschwindigkeit als auch den Kontrast von Passiv Matrix… …   Universal-Lexikon

  • Hpa — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. {{{image}}}   Sigles d une seule lettre   Sigles de deux lettres > Sigles de trois lettres …   Wikipédia en Français

  • HPA — ist die Abkürzung für: Polizeiakademie Hessen ersetzte zum 1. Januar 2010 die Bezeichnung Hessische Polizeischule HPS Hamburg Port Authority Handelspolitische Abteilung Teil des DDR Außenministeriums Hauptpotentialausgleich Hektopascal (hPa)… …   Deutsch Wikipedia

  • hPa — Hektopascal …   Die deutsche Rechtschreibung

  • Hpa-An — Infobox Settlement official name = Hpa An other name = native name = my. ဘားအံမြို့ nickname = settlement type = motto = imagesize = image caption = flag size = image seal size = image shield = shield size = image blank emblem = blank emblem type …   Wikipedia

  • HPa — Einheit Norm SI Einheitensystem Einheitenname Pascal Einheitenzeichen Pa Beschriebene Größe(n) Mechanischer , hydrodynamischer und m …   Deutsch Wikipedia

  • HPa — Pascal (unité) Pour les articles homonymes, voir Pascal …   Wikipédia en Français

  • Hpa-an — Original name in latin Hpa an Name in other language Hpa an, Pa an, Pan State code MM Continent/City Asia/Rangoon longitude 16.88953 latitude 97.63482 altitude 18 Population 50000 Date 2013 08 04 …   Cities with a population over 1000 database

  • hPa — hectopascal [ ɛktopaskal ] n. m. • d. i.; adopté offic. 1986; de hecto et 2. pascal ♦ Météor. Unité de mesure de pression valant cent pascals (symb.hPa). L hectopascal équivaut au millibar, ancienne unité. Mille hectopascals …   Encyclopédie Universelle

  • HPA — high power amplifier …   Military dictionary