What does Adk stand for?

Awning Deck - of a ship (DS)

Adak Island - Alaska - Airport symbol (OAG)

Adak Island - Alaska - Seismograph station code, US Geological Survey (SEIS)

Adenosine Kinase (DMAA)

Adenylate Kinase - An enzyme

Adirondack Mountain Club (EA)

Alliance for Democracy in Korea - Defunct (EA)

Allied Digital Tech - AMEX symbol

Allied Digital Technologies - Formerly, AMG Digital Technologies - AMEX symbol (SAG)

Atlantic Boat Works, Hull, MA - Manufacturer code for watercraft hull identification number (USCG)

Atlantic Boat Works (Massachusetts) - NCIC boat manufacturer code (NCIC)

Attach-Detach Kit

Automatic Depth Keeping (IAA)

Aviation Development Co. Nigeria Ltd. - ICAO designator (FAAC)