Airports

• Ada Municipal Airport
  Ada Municipal Airport
  Ada Municipal Airport is a public airport located two miles north of the central business district of Ada, a city in Pontotoc County, Oklahoma, United States. It is owned by the City of Ada, which is located in southeast Oklahoma, southeast of Oklahoma City.Although most U.S...
  
   (FAA LID
  Location identifier
  A location identifier is a symbolic representation for the name and the location of an airport, navigation aid, or weather station, and is used for manned air traffic control facilities in air traffic control, telecommunications, computer programming, weather reports, and related services.-ICAO...
  
  : ADH) in Ada, Oklahoma
• Aldan Airport
  Aldan Airport
  Aldan Airport is a civilian airport in Russia located 1 km east of Aldan and 450 km away from Yakutsk. Currently, there is no scheduled passenger service in this airport....
  
   (IATA airport code
  IATA airport code
  An IATA airport code, also known an IATA location identifier, IATA station code or simply a location identifier, is a three-letter code designating many airports around the world, defined by the International Air Transport Association...
  
  : ADH) in Aldan, Russia

Medicine

• Antidiuretic hormone
  Vasopressin
  Arginine vasopressin , also known as vasopressin, argipressin or antidiuretic hormone , is a neurohypophysial hormone found in most mammals, including humans. Vasopressin is a peptide hormone that controls the reabsorption of molecules in the tubules of the kidneys by affecting the tissue's...
  
   (also called vasopressin or arginine vasopressin), a peptide hormone that is released from the posterior pituitary when signaled by the hypothalmus, preventing the production of dilute urine.
• Atypical ductal hyperplasia
  Atypical ductal hyperplasia
  Atypical ductal hyperplasia, abbreviated ADH, is the term used for a benign lesion of the breast that indicates an increased risk of breast cancer....
  
  , a benign proliferative disease of the breast with an increased risk for breast cancer
  Breast cancer
  Breast cancer is cancer originating from breast tissue, most commonly from the inner lining of milk ducts or the lobules that supply the ducts with milk. Cancers originating from ducts are known as ductal carcinomas; those originating from lobules are known as lobular carcinomas...
  
  .

Science

• Accumulated Degree Hour, a term used in forensic entomology in the determination of post-mortem interval
• ADaptive Hydraulics, a computational hydraulic model
• Adipic acid dihydrazide
  Adipic acid dihydrazide
  Adipic acid dihydrazide is a chemical used for cross-linking water-based emulsions. It can also be used as a hardener for certain epoxy resins. ADH is a symmetrical molecule with a C4 backbone and the reactive group is C=ONHNH2. Dihydrazides are made by the reaction of an organic acid with...
  
  , a chemical compound
• Alcohol dehydrogenase
  Alcohol dehydrogenase
  Alcohol dehydrogenases are a group of dehydrogenase enzymes that occur in many organisms and facilitate the interconversion between alcohols and aldehydes or ketones with the reduction of nicotinamide adenine dinucleotide...
  
  , an enzyme involved in the break-down of alcohol
• Antidiuretic hormone
  Vasopressin
  Arginine vasopressin , also known as vasopressin, argipressin or antidiuretic hormone , is a neurohypophysial hormone found in most mammals, including humans. Vasopressin is a peptide hormone that controls the reabsorption of molecules in the tubules of the kidneys by affecting the tissue's...
  
   or vasopressin, a hormone
  Hormone
  A hormone is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Only a small amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from one...
  
   that acts on the kidney
  Kidney
  The kidneys, organs with several functions, serve essential regulatory roles in most animals, including vertebrates and some invertebrates. They are essential in the urinary system and also serve homeostatic functions such as the regulation of electrolytes, maintenance of acid–base balance, and...
  
  s
• Autosomal dominant Hypocalcaemia
  Hypocalcaemia
  In medicine, hypocalcaemia is the presence of low serum calcium levels in the blood, usually taken as less than 2.1 mmol/L or 9 mg/dl or an ionized calcium level of less than 1.1 mmol/L or 4.5 mg/dL. It is a type of electrolyte disturbance...
  
   due to a mutation of the Calcium receptor (CaR)

Other

• Accidental Damage From Handling, as defined in many extended warranty plans
• Ardenwood Dragon's Helpers (a group) Ardenwood dragon's helpers was a group of children that used to earn money for their school.