A holographic projection, sometimes shortened to holo-projection or simply projection, were holograms that were, in most cases, projected outside their normal hologrid confinement, though use of a holo-projection system or independant holo-emitters.

During the Klingon-Cardassian War, the Cardassians used sensor ghosts and holo-projections during the Klingon-Cardassian War, a fact that Leskit recalled when comparing the differences in honor between the Cardassians and the Jem'Hadar. (DS9: "Soldiers of the Empire")

The crew of the USS Voyager installed holo-emitters on their ship's hull to fool the Kazon-Nistrim into thinking that they had Talaxian reinforcements during a battle in 2372. (VOY: "Basics, Part I")

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