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SDI abbreviation of "Strategic Defense Initiative," a proposed U.S. defense system in which enemy missiles would be detected and destroyed in flight by weaponry contained in earth satellites, also known as "Star Wars" in reference to similar technology found in the science fiction saga of that name.
Strategic Defense Initiative a proposed U.S. defense system in which enemy missiles would be detected and destroyed in flight by weaponry contained in earth satellites, also known as Star Wars in reference to similar technology found in the science fiction saga of that name.