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Da, DA, dA, and other variants may refer to:

Arts, entertainment, and media[edit]

Degrees and licenses[edit]


Politics and judiciary[edit]


Science and technology[edit]

Biology and medicine[edit]

Other uses in science and technology[edit]

  • Dalton (unit) (symbol Da), also called the unified atomic mass unit
  • Deca- or da-, an SI prefix for a factor of 10
  • Distribution amplifier, a device that accepts a single input signal and provides this same signal to multiple isolated outputs
  • Double-action, a firearm operation mechanism in which the trigger both cocks and releases the hammer
  • NZR DA class, a New Zealand diesel locomotive
  • SJ Da, a Swedish electric locomotive
  • Domain authority Domain Authority


Other uses[edit]

See also[edit]