Dilithium, also known as radan, is an element, a member of the hypersonic series, mostly occurring as crystalline mineral. It was used to control the power of the warp drive systems of many starships by regulating the matter/antimatter reaction in a ship's warp core because of its ability to be rendered porous to light-element antimatter when exposed to high temperatures and electromagnetic pressures. It controlled the amount of power generated in the reaction chamber, channeling the energy released by mutual annihilation into a stream of electro-plasma.
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