transparent
  • A body, material, or medium which freely passes radiant energy, such as light, or sound.
  • A body, material, or medium which freely passes one form of radiant energy, such as visible light, but does not pass others, such as infrared light.
  • A body, material, or medium which freely passes one type of particle, such as photons, but does not pass others, such as ions.
  • The passing of a signal through a communications network with no changes, or no detectable changes, as occurs, for instance, in transparent routing.
  • In computers and communications, a change in hardware and/or software which does not produce any detectable changes, especially those which impair operation.

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