Science and technology

• Dihydrotestosterone
  Dihydrotestosterone
  Dihydrotestosterone is an androgen or male sex hormone. The enzyme 5α-reductase synthesises DHT in the prostate, testes, hair follicles, and adrenal glands...
  
  , a potent endogenous androgenic hormone, derived from testosterone
• Directly heated triode, a type of thermionic valve now used primarily in audio amplifiers
• Discrete Hartley transform
  Discrete Hartley transform
  A discrete Hartley transform is a Fourier-related transform of discrete, periodic data similar to the discrete Fourier transform , with analogous applications in signal processing and related fields. Its main distinction from the DFT is that it transforms real inputs to real outputs, with no...
  
  , a Fourier-related transform of discrete, periodic data similar to the discrete Fourier transform
• Distributed hash table
  Distributed hash table
  A distributed hash table is a class of a decentralized distributed system that provides a lookup service similar to a hash table; pairs are stored in a DHT, and any participating node can efficiently retrieve the value associated with a given key...
  
  , a type of distributed system that provides hash table–like functionality
• Dr Hadwen Trust
  Dr Hadwen Trust
  The Dr Hadwen Trust is the UK's leading medical research charity that funds and promotes exclusively non-animal techniques to replace animal experiments...
  
  , a UK based Medical Research Charity, funding and promoting the development and use of alternatives to animal experiments in medical research.

Other

• DHT (band)
  DHT (band)
  DHT is a Belgian duo, consisting of singer, Edmée Daenen and Flor Theeuwes . They had a hit in the US and in Australia in 2005, with their cover version of "Listen to Your Heart", originally recorded by Roxette. The track reached #7 in the UK Singles Chart in December of that year...
  
  , a Belgian dance duo that covered the song "Listen to Your Heart" by Roxette
  Roxette
  Roxette are a Swedish pop music duo, consisting of Marie Fredriksson and Per Gessle . Formed in 1986, the duo became an international act from the late 1980s, when they released their breakthrough album Look Sharp!...
  
  
• Deputy head teacher
  Deputy head teacher
  A deputy head teacher, deputy headmaster or deputy headmistress is the second most senior teacher in a school in the United Kingdom and elsewhere....
  
  , the second most senior teacher in a school in the United Kingdom and elsewhere