Health authority
Between 1996 and 2002, the National Health Service in England and Wales was organised under health authorities (HAs). There were 95 HAs at the time of their abolition in England in 2002, and they reported to the eight regional offices of the NHS ...
, a former type of administrative organisation of the NHS in England and Wales
*
Hells Angels Motorcycle Club
The Hells Angels Motorcycle Club (HAMC) is an international outlaw motorcycle club founded in California whose members typically ride Harley-Davidson motorcycles. In the United States and Canada, the Hells Angels are incorporated as the Hells ...
*
Highways Agency
National Highways (NH), formerly Highways England and before that the Highways Agency, is a government-owned company charged with operating, maintaining and improving motorways and major A roads in England.
It also sets highways standards u ...
(renamed ''Highways England'', now ''National Highways''), UK government body maintaining England's major roads
* Homelessness Australia, peak body organisation for homeless people and services
*
Homosexuals Anonymous
Homosexuals Anonymous (HA) is an ex-gay group which practices conversion therapy and describes itself as "a fellowship of men and women, who through their common emotional experience, have chosen to help each other live in freedom from homosexuali ...
an ex-gay program for dealing with unwanted same-sex attractions
*
Hong Kong Housing Authority
The Hong Kong Housing Authority (HA) is the main provider of public housing in Hong Kong. It was established in April 1973 under the Housing Ordinance and is an government agency, agency of the Government of Hong Kong. In the same year, the R ...
Hamar Arbeiderblad
''Hamar Arbeiderblad'' (often referred to locally as "HA") is local newspaper published in Hamar, Norway by Hamar Media. The paper is edited by Carsten Bleness. HA was one of the first newspapers to place the internet edition of a newspaper behin ...
'', a Norwegian newspaper
* ''
Human Action
''Human Action: A Treatise on Economics'' is a work by the Austrian economist and philosopher Ludwig von Mises. Widely considered Mises' ''magnum opus'', it presents the case for laissez-faire capitalism based on praxeology, his method to under ...
'', a book by the Austrian economist Ludwig von Mises
*
The Jim Henson Company
The Jim Henson Company, Inc., formerly known as Muppets, Inc., Henson Associates, Inc., and Jim Henson Productions, Inc. (commonly referred to as Henson), is an American entertainment company located in Los Angeles, California. The company is kn ...
, formerly known as ha!
Language
* Ha (Javanese) (ꦲ), a letter in the Javanese script
* Ha (kana), in syllabic Japanese script
*ه (
hāʾ
He is the fifth letter of the Semitic abjads, including Phoenician ''hē'' 𐤄, Hebrew ''hē'' , Aramaic ''hē'' 𐡄, Syriac ''hē'' ܗ, and Arabic ''hāʾ'' . It is also related to the Ancient North Arabian 𐪀, South Arabian ...
), ح (
ḥāʾ
Heth, sometimes written Chet or Ḥet, is the eighth letter of the Semitic abjads, including Phoenician ''ḥēt'' 𐤇, Hebrew ''ḥēt'' , Aramaic ''ḥēṯ'' 𐡇, Syriac ''ḥēṯ'' ܚ, and Arabic ''ḥāʾ'' . It is also related to t ...
), or خ (
ḫāʾ
, , or Xe (, transliterated as ( DIN-31635), ( Hans Wehr), (ALA-LC) or (ISO 233)) is one of the six letters the Arabic alphabet added to the twenty-two inherited from the Phoenician alphabet (the others being , , , , ). It is based on the ...
), Arabic letters
*
Ha language
Ha, also known with the Bantu language prefix as ''Giha, Igiha,'' or ''Kiha,'' is a Bantu language spoken by the Ha people of the Kigoma Region of Tanzania, spoken on the eastern side of Lake Tanganyika up to the headwaters of the Mikonga. It i ...
, the language of the Ha people in eastern Africa
*
Hausa language
Hausa (; / ; Hausa Ajami, Ajami: ) is a Chadic language spoken primarily by the Hausa people in the northern parts of Nigeria, Ghana, Cameroon, Benin and Togo, and the southern parts of Niger, and Chad, with significant minorities in Ivory Coas ...
, ISO 639-1 code HA
Places
*
Ha, Bhutan
Ha, also known as Haa or Has, is a Thromde or town, and the seat of Haa District in Bhutan.
Ha is situated in Haa Valley in the west of Bhutan bordering Sikkim. The major economic activity is Rice production in Bhutan, rice production, yak herdin ...
*
Hå
Hå is a List of municipalities of Norway, municipality in Rogaland county, Norway. It is the southernmost municipality in the Traditional districts of Norway, traditional district of Jæren. The administrative centre of the municipality is the v ...
, Norway
*
Ha Gorge
Ha Gorge () is a narrow Canyon, gorge, at the Monasteraki Dakos, on the eastern part of the island of Crete in Greece. It is located in the west slope of Thrypti mountain range, and exits east
of Vasiliki, Lasithi, Vasiliki village in the plain o ...
, Greece
*
HA postcode area
The HA postcode area, also known as the Harrow postcode area, is a group of ten postcode districts in England, within seven post towns. These cover part of northwest London, plus a very small part of south Hertfordshire.
The main sorting offic ...
, a group of English postal districts in north-west London
*
Henan
Henan; alternatively Honan is a province in Central China. Henan is home to many heritage sites, including Yinxu, the ruins of the final capital of the Shang dynasty () and the Shaolin Temple. Four of the historical capitals of China, Lu ...
, a province of China (Guobiao abbreviation HA)
Science and technology
Chemistry
*
Hahnium
Dubnium is a synthetic chemical element; it has symbol Db and atomic number 105. It is highly radioactive: the most stable known isotope, dubnium-268, has a half-life of about 16 hours. This greatly limits extended research on the element.
D ...
Hydroxylapatite
Hydroxyapatite ( IMA name: hydroxylapatite) (Hap, HAp, or HA) is a naturally occurring mineral form of calcium apatite with the formula , often written to denote that the crystal unit cell comprises two entities. It is the hydroxyl endmembe ...
, a mineral
Medicine
*
Hyperandrogenic anovulation
Polycystic ovary syndrome, or polycystic ovarian syndrome, (PCOS) is the most common endocrine disorder in women of reproductive age. The name is a misnomer, as not all women with this condition develop cysts on their ovaries. The name origi ...
, also called polycystic ovary syndrome
* Health anxiety (HA) or
hypochondriasis
Hypochondriasis or hypochondria is a condition in which a person is excessively and unduly worried about having a serious illness. Hypochondria is an old concept whose meaning has repeatedly changed over its lifespan. It has been claimed that th ...
(hypochondria)
*
Hemagglutinin (influenza)
Influenza hemagglutinin (HA) or haemagglutinin#Notes, (British English) is a homotrimeric glycoprotein found on the surface of influenza viruses and is integral to its infectivity.
Hemagglutinin is a class I fusion protein, having multifunc ...
(HA), an antigenic glycoprotein from Influenza viruses
* Hemagglutination assay, a measurement of viruses or bacteria
Units of measure
*
Hartree
The hartree (symbol: ''E''h), also known as the Hartree energy, is the measurement unit, unit of energy in the atomic units system, named after the British physicist Douglas Hartree. Its CODATA recommended value is =
The hartree is approximat ...
, an atomic unit of energy
*
Hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...
(ha), a unit of area
* Hectoampere, a unit of electric current
Other uses in science and technology
* ha (function prefix) (half), a prefix for some trigonometric functions in mathematics
*
High availability
High availability (HA) is a characteristic of a system that aims to ensure an agreed level of operational performance, usually uptime, for a higher than normal period.
There is now more dependence on these systems as a result of modernization ...
, systems design and implementation with a view to maximising service
*
Hour angle
In astronomy and celestial navigation, the hour angle is the dihedral angle between the '' meridian plane'' (containing Earth's axis and the zenith) and the '' hour circle'' (containing Earth's axis and a given point of interest).
It may be ...
, in astronomy, one of the coordinates of the equatorial coordinate system
* Ha, or
alternative hypothesis
In statistical hypothesis testing, the alternative hypothesis is one of the proposed propositions in the hypothesis test. In general the goal of hypothesis test is to demonstrate that in the given condition, there is sufficient evidence supporting ...
, in statistical testing
*
H-alpha
Hydrogen-alpha, typically shortened to H-alpha or Hα, is a deep-red visible spectral line of the hydrogen atom with a wavelength of 656.28 nm in air and 656.46 nm in vacuum. It is the first spectral line in the Balmer series and is em ...
(Hα), a deep-red visible spectral line of the hydrogen atom
Hundred Family Surnames
The ''Hundred Family Surnames'' (), commonly known as ''Bai Jia Xing'', also translated as ''Hundreds of Chinese Surnames'', is a classic Chinese language , Chinese text composed of common Chinese surnames. An unknown author compiled the book ...
Xia (surname)
Xia is the Standard Chinese, Mandarin pinyin romanization of the Chinese surname written in Chinese character. It is romanized Hsia in Wade–Giles, and Ha in Cantonese. Xia is the 154th surname in the Song dynasty Chinese classics, classic text ' ...
( 夏), romanized as Ha in Cantonese, Korean and Vietnamese pronunciation
Transportation
* British Rail Class 71, a locomotive (classified type HA under the Southern Region's pre-TOPS scheme)
*
Hawaiian Airlines
Hawaiian Airlines, Inc. ( ) is a commercial U.S. airline headquartered in Honolulu, and a subsidiary of the Alaska Air Group. It is the largest operator of commercial flights to and from the island state of Hawaiʻi, and the tenth largest ...
(IATA designator HA)
*
Highways Agency
National Highways (NH), formerly Highways England and before that the Highways Agency, is a government-owned company charged with operating, maintaining and improving motorways and major A roads in England.
It also sets highways standards u ...
(now ''National Highways''), UK government body maintaining England's major roads
Heng and Ha
Heng and Ha () are two generals of the Shang dynasty in Chinese mythology, featured within the 16th-century Chinese fantasy novel ''Investiture of the Gods''. These two fictional characters were created by the author of ''Investiture of the Gods'' ...
*
Ha people
__NOTOC__
The Ha, also called Abaha (''Waha'' in Swahili language, Swahili), are a Bantu peoples, Bantu ethnic group found in Kigoma Region in northwestern Tanzania bordering Lake Tanganyika.Hospitalman Apprentice, a U.S. Navy rank
Has (disambiguation)
HAS or Has may refer to:
Organizations
* Hawaii Audubon Society, bird conservation organization in Hawaii
* Hellenic Actuarial Society, association of actuaries in Greece
* Hubbard Association of Scientologists International, corporation foun ...