Science

• Defined Daily Dose, a World Health Organisation statistical measure of drug use
• Degenerative disc disease
  Degenerative disc disease
  Degeneration of the intervertebral disc, often called "degenerative disc disease" of the spine, is a condition that can be painful and can greatly affect the quality of one's life...
  
   is a common disorder of the lower spine.
• Dichlorodiphenyldichloroethane
  Dichlorodiphenyldichloroethane
  Dichlorodiphenyldichloroethane is an organochlorine insecticide that is slightly irritating to the skin. DDD is a metabolite of DDT. DDD is colorless and crystalline; it is closely related chemically and is similar in properties to DDT, but it is considered to be less toxic to animals than is DDT...
  
  , a breakdown product of DDT

Computers and Technology

• Data Display Debugger
  Data Display Debugger
  Data Display Debugger, or DDD, is a popular free software graphical user interface for command-line debuggers such as GDB, DBX, JDB, , XDB, the Perl debugger, the Bash , the Python , and the GNU Make...
  
  , (Gnu DDD) a popular graphical user interface for command-line debuggers
• Direct distance dialing
  Direct distance dialing
  Direct distance dialing or direct dial is a telecommunications term for a network-provided service feature in which a call originator may, without operator assistance, call any other user outside the local calling area. DDD requires more digits in the number dialed than are required for calling...
  
  , a telephony innovation that enabled subscribers to call long distance numbers without having to go though an operator
• DDD, SPARS Code
  SPARS Code
  SPARS is an acronym for the Society of Professional Audio Recording Services. The SPARS code is a three-letter code that appears on some Compact Disc recordings telling the consumer whether analog or digital equipment was used in producing the recording...
  
   for "Digital, digital, digital", a "pure digital" recording that is recorded, mastered, and transferred digitally, sometimes misconstrued as "Direct Digital Disc"
• Domain-driven design
  Domain-driven design
  Domain-driven design is an approach to developing software for complex needs by deeply connecting the implementation to an evolving model of the core business concepts...
  
   is a way of thinking and a set of priorities for object oriented programming

Entertainment and popular culture

• Dingdong Dantes
  Dingdong Dantes
  Jose Sixto Raphael Gonzalez Dantes III, popularly known as Dingdong Dantes, is a director/actor and model, born on August 2, 1980 in Quezon City, Philippines.- Early years :...
  
  , a popular Filipino actor
• Diners, Drive-Ins and Dives
  Diners, Drive-Ins and Dives
  Diners, Drive-Ins and Dives is an American food television series that premiered in November 2006 on the Food Network. Produced by Page Productions, the program stars and is hosted by Guy Fieri...
  
  , a television series on the Food Network
• DDD (album)
  DDD (album)
  DDD is Poster Children's seventh album, released in 2000. It derives its name from the SPARS Code for a digitally recorded, mixed, and mastered album.-Track listing:# "This Town Needs a Fire" – 2:36# "Strange Attractors" – 3:30# "Daisy Changed" – 3:26...
  
  , by Poster Children named after the pure digital recording process
• D.D.D.
  D.D.D.
  "D.D.D." is a J-Pop song which is written by Japanese R&B duo Soulhead and their producer Octopussy; Soulhead wrote the lyrics while the team wrote the music together and Octopussy made the musical arrangement. The song appears on Koda's 6th album Best: second session, and it is also the 3rd single...
  
  , a JPop song written by Japanese R&B duo Soulhead

Other

• Dictionary of Deities and Demons in the Bible
  Dictionary of Deities and Demons in the Bible
  The Dictionary of Deities and Demons in the Bible is an academic reference work edited by Karel van der Toorn, Bob Becking and Pieter W. van der Horst which contains academic articles on the named gods, angels, and demons in the books of the Hebrew Bible, Septuagint and Apocrypha, as well as the...
  
  
• DDD, a brassiere cup size
• Delta Delta Delta
  Delta Delta Delta
  Delta Delta Delta , also known as Tri Delta, is an international sorority founded on November 27, 1888, the eve of Thanksgiving Day. With over 200,000 initiates, Tri Delta is one of the world's largest NPC sororities.-History:...
  
  , a national collegiate sorority
• Die deterioration doubling
  Die deterioration doubling
  Die deterioration doubling is an extremely common form of mint-made error on many United States and Canadian coins that results from degradation of the die used to strike the coin....
  
  , a common form of mint-made error on coins that results from degradation of the die used to strike the coin
• Direct Digital Democracy